Samsung evo 840


Samsung SSD 850 EVO | Samsung V-NAND Consumer SSD | Samsung Semiconductor Global Website

  • Form Factor
  • 2.5 inch, mSATA, M.2
  • Capacity
  • 120 GB, 250 GB, 500 GB, 1,024 GB, 2,048 GB, 4,096 GB
  • Sequential Read Speed
  • Up to 540 MB/sec
  • Sequential Write Speed
  • Up to 520 MB/sec
SHOW MORE SPECS (2.5-Inch) layer open
  • Client PCs

  • 2.5 inch

  • SATA 6Gb/s (compatible with SATA 3Gb/s & SATA 1.5Gb/s)

  • 100 X 69.85 X 6.8 (mm)

  • Max 55.0g

  • Samsung V-NAND

  • Samsung MGX Controller (120 GB, 250 GB, 500 GB) Samsung MHX Controller ( 1,024 GB, 2,048 GB, 4,096 GB)

  • 256 MB Low Power DDR3 (120 GB) 512 MB Low Power DDR3 (250 GB, 500 GB) 1 GB Low Power DDR3 (1,024 GB) 2 GB Low Power DDR3 (2,048 GB) 4 GB Low Power DDR3 (4,096 GB)

  • Yes

  • Yes

  • Auto Garbage Collection Algorithm

  • AES 256-bit Encryption (Class 0) TCG/Opal IEEE1667 (Encrypted drive)

  • Yes

  • Yes

  • Up to 540 MB/s

  • Up to 520 MB/s

  • 120 GB: Up to 94,000 IOPS 250 GB: Up to 97,000 IOPS 500 GB: Up to 98,000 IOPS 1,024 GB: Up to 98,000 IOPS 2,048 GB: Up to 98,000 IOPS

    4,096 GB: Up to 98,000 IOPS

  • 120 GB: Up to 88,000 IOPS 250 GB: Up to 88,000 IOPS 500 GB: Up to 90,000 IOPS 1,024 GB: Up to 90,000 IOPS 2,048 GB: Up to 90,000 IOPS

    4,096 GB: Up to 90,000 IOPS

  • Up to 10,000 IOPS

  • Up to 40,000 IOPS

  • 120 GB: Average 2.1 W Maximum 2.4 W 250 GB: Average 2.2 W Maximum 2.4 W 500 GB: Average 2.5 W Maximum 3.5 W 1,024 GB: Average 2.7 W Maximum 4.4 W 2,048 GB: Average 3.4 W Maximum 5.0 W 4,096 GB: Average 3.6 W Maximum 5.6 W

    (Burst mode)

  • Max. 50mW

  • 5V ± 5% Allowable voltage

  • 1.5 Million Hours Reliability

  • 0 - 70 ℃

  • 1,500 G & 0.5 ms (Half sine)

  • 5 Years or 75 TBW

  • 5 Years or 75 TBW

  • 5 Years or 150 TBW

  • 5 Years or 150 TBW

  • 5 Year or 300 TBW

  • 5 Year or 300 TBW

SHOW MORE SPECS (mSATA) layer open
  • Client PCs

  • mSATA

  • SATA 6Gb/s (compatible with SATA 3Gb/s & SATA 1.5Gb/s)

  • (29.85±0.15) x (50.80±0.15) x Max 3.85 (mm)

  • Max. 6.8g (120 GB) Max. 7.0g (250 GB) Max. 8.3g (500 GB)

    Max. 8.5g (1,024 GB)

  • Samsung V-NAND

  • Samsung MGX Controller

  • 512 MB Low Power DDR3 (120GB, 250 GB, 500 GB)

    1 GB Low Power DDR3 (1,024 GB)

  • Yes

  • Yes

  • Auto Garbage Collection Algorithm

  • AES 256-bit Encryption (Class 0) TCG/Opal IEEE1668 (Encrypted drive)

  • Yes

  • Yes

  • Up to 540 MB/s

  • Up to 520 MB/s

  • 120 GB: Up to 95,000 IOPS 250 GB: Up to 97,000 IOPS 500 GB: Up to 97,000 IOPS

    1,024 GB: Up to 97,000 IOPS

  • 120 GB: Up to 97,000 IOPS 250 GB: Up to 88,000IOPS 500 GB: Up to 88,000IOPS

    1,024 GB: Up to 88,000 IOPS

  • Up to 10,000 IOPS

  • Up to 40,000 IOPS

  • 120 GB: Average 2.2 W Maximum3.3 W 250 GB: Average 2.3 W Maximum 3.6 W 500 GB: Average 3.3 W Maximum 4.8 W 1,024 GB: Average 4.3 W Maximum 5.7 W

    (Burst mode)

  • Max. 50mW

  • 3.3V ± 5% Allowable voltage

  • 1.5 Million Hours Reliability

  • 0 - 70 ℃

  • 1,500 G & 0.5 ms (Half sine)

  • Magician Software for Consumer SSD

  • 5 Years or 75 TBW

  • 5 Years or 75 TBW

  • 5 Years or 150 TBW

  • 5 Years or 150 TBW

Show More Specs (M.2) layer open
  • Client PCs

  • M.2

  • SATA 6Gb/s (compatible with SATA 3Gb/s & SATA 1.5Gb/s)

  • Max 80.15 x 22.15 x 2.38 (mm)

  • Max. 6.5g (120 GB) Max. 6.8g (250 GB) Max. 7.0g (500 GB)

    Max. 8.0g (1,024 GB)

  • Samsung V-NAND

  • Samsung MGX Controller

  • 512 MB Low Power DDR3 (120GB, 250 GB, 500 GB)

    1 GB Low Power DDR3 (1,024 GB)

  • Yes

  • Yes

  • Auto Garbage Collection Algorithm

  • AES 256-bit Encryption (Class 0) TCG/Opal IEEE1668 (Encrypted drive)

  • Yes

  • Yes

  • Up to 540 MB/s

  • 120 GB: Up to 500 MB/s 250 GB: Up to 520 MB/s 500 GB: Up to 520 MB/s

    1,024 GB: Up to 520 MB/s

  • 97,000 IOPS

  • 120 GB: Up to 89,000 IOPS 250 GB: Up to 89,000IOPS 500 GB: Up to 88,000IOPS

    1,024 GB: Up to 88,000 IOPS

  • Up to 10,000 IOPS

  • Up to 40,000 IOPS

  • 120 GB: Average 2.3 W Maximum 3.3 W 250 GB: Average 2.4 W Maximum 3.7 W 500 GB: Average 2.5 W Maximum 3.5 W 1,024 GB: Average 2.7 W Maximum 4.3 W

    (Burst mode)

  • Max. 50mW

  • 3.3V ± 5% Allowable voltage

  • 1.5 Million Hours Reliability

  • 0 - 70 ℃

  • 1,500 G & 0.5 ms (Half sine)

  • Magician Software for Consumer SSD

  • 5 Years or 75 TBW

  • 5 Years or 75 TBW

  • 5 Years or 150 TBW

  • 5 Years or 150 TBW

www.samsung.com

Samsung V-NAND SSD | Samsung Semiconductor Official Site | Samsung Semiconductor Global Website

PORTABLE SSD T5

The world in your pocket

SSD 970 EVO Plus

Unreal Performance, Realized.

SSD 860 QVO

Your First Terabyte SSD

PORTABLE SSD X5

Drive at lightning speed

DATA CENTER SSD

Accelerate your business.

SSD 970 PRO | EVO

Unreal Performance, Realized.

Gaming SSDs

Load Fast. Play Fast.

The 860 Series is NAND flash-based SATA interface SSD which improve your overall computing experience.

Elevate your storage tasks to ultimate heights on PCs and Macs with Thunderbolt™ 3 ports.

Experience the best. For intensive workloads on PCs and workstations, the 970 PRO gives utmost performance

enabled by Samsung's NVMe™ SSD leadership.

The Samsung Portable SSD sets the new standard for external storage with speed, durability and connectivity.

Your ultimate secret weapon. Prepare for full gaming immersion with Samsung SSD's advanced V-NAND technology.

How ancient is your PC? Take a minute to let the PC Age Calculator determine

just how much of a relic your computer really is.

www.samsung.com

Samsung 840 EVO SSD Firmware EXT0DB6Q

Experience a brand new, faster performance

840 EVO is significantly faster than a standard HDD, providing more rapid sequential and random read and write times for every task. Samsung’s new 3-bit MLC NAND flash memory stores data more efficiently, increasing both speed and reliability. Whether it’s a heavy workload like video file editing or a simple task like a virus scan, 840 EVO runs every job smoothly and quickly. Multitasking is a simple job for this SSD, which can operate several tasks simultaneously nearly three times faster than an HDD.

Also, with Samsung’s innovative TurboWrite technology, 840 EVO also dramatically boosts the sequential write rate. The drive’s random read rate for light workloads (QD1) is 10,000 Input/Output Operations Per Second (IOPS), the best in the industry. To improve system-level performance, turn on the RAPID cache function on Samsung Magician software to use the PC’s free DRAM as a cache. Working more efficiently with the high-performing Samsung SSD 840 EVO will change your everyday computer usage. Now, your computer will wait for you—not the other way around.

Always be in high acceleration

If you are a speed demon, you will certainly enjoy the new level of excitement 840 EVO offers you. Thanks to Samsung’s TurboWrite technology, 840 EVO can deliver much faster sequential write speeds compared to the previous 840 model, tripling the speed from 130 to 410MB/s in 120 GB drives, and doubling it from 250 to 520MB/s in 250 GB drives. Utilizing an innovative write acceleration algorithm and high performance write buffer, you can expect accelerated speeds and higher satisfaction from your PC.

Enjoy rapid performance by switching to a higher gear

Like changing gears in a car, with Magician software you have the option of RAPID mode, enhancing performance by processing data on a system level through the use of free PC memory (DRAM) as a cache. Depending on your PC memory, you can expect higher performance and more efficient command processing, which improves with repeated tasking. Boost into a higher gear to vastly improve QD1 random write performance to almost the same level as QD32.

Unmatched reliability for consistently high performance

Toughen up your PC with 840 EVO so that it can cope with almost any daily life situation. Shocks, vibrations, high temperatures—bring it on! With its robust strength, 840 EVO boasts an incredibly long life expectancy and a very low failure rate. What’s more, Samsung offers a 3-year warranty to back it up.

The reliability of 840 EVO does not apply only to its physique. Equipped with Advanced Signal Processing, 840 EVO automatically corrects errors so you’ll worry less about your data’s stability. Plus, using Samsung Self-Monitoring Analysis & Reporting Technology (SMART), you can track your SSD’s health status. SMART warns you of any unforeseen errors before they occur, so you’ll be prepared.

In addition, Samsung’s Dynamic Thermal Guard Algorithm in 840 EVO’s firmware monitors the temperature of the SSD, preventing it from overheating. When the SSD is exposed to hot weather or extreme temperatures, the algorithm controls the SSD’s power supply to keep it cool. Plus, with 840 EVO your PC becomes lighter and more energy-efficient, which means you can carry it with you more.

Rock-solid encryption to secure your data

When you take your laptop on the road, you expose your personal information to new vulnerabilities. But don’t worry, 840 EVO’s Self-Encrypting Drive (SED) security technology will help keep your data safe at all times. The drive includes an AES 256-bit hardware-based encryption engine to ensure that your personal files remain secure, even if you lose your laptop. Being hardware-based, the encryption engine secures your data without performance degradation that you may experience with a software-based encryption.

Keep your PC performance safe from heat

When you’re immersed in your work, you might not notice that your PC is burning hot and struggling to keep up. With 840 EVO, your PC stays cool, even when you sometimes overwork it. 840 EVO includes Dynamic Thermal Guard protection, which monitors and maintains optimal operating temperatures for the drive. The throttling feature can drop the SSD’s temperature when necessary to protect your data and ensure the responsiveness you expect.

Increased energy efficiency to keep you doing what you love

Enjoy doing more of what you love on your computer for a longer time. 840 EVO features lower idle power consumption compared to HDDs. This is important because PCs spend 80 to 90 percent of their time sitting idle. The drive promotes energy savings and longer battery life, which gives you more time and flexibility when you’re on the go.

Simple and easy tools for a convenient upgrade

With 840 EVO, your upgrade becomes simple and quick. Using a SATA-to-USB 3.0 connector provided in the laptop upgrade package, for a data size of 100 GB, you can migrate all the data from your HDD to 840 EVO in only 24 minutes—just a third of the time needed for a SATA-to-USB 2.0 connector offered in some previous models. Using the One-stop Install Navigator software, your SSD installation will be a snap. The Auto Install guide included in the toolkit will guide you smoothly through the whole installation process. The Samsung Data Migration software helps you through the migration with a straightforward three-step process, recommending user options so that you can migrate your data in the optimal way.

What’s more, you can conveniently monitor, manage and maintain your new SSD with the Samsung Magician software that’s also offered in the One-stop Install Navigator toolkit. Samsung Magician features tools to help you maximize performance, including benchmarking, advanced OS optimization, disk health status tracking and over-provisioning settings. 840 EVO makes your upgrade a simple job, and your PC’s awesome performance will leave you feeling glad that you did.

Integrated solution combining top-quality components

Just as delectable dishes are made from the best ingredients, Samsung combines the finest components to create superior-quality SSDs. Samsung uses the best quality NAND flash memory chips from its own fabrication lines for SSDs. Only the chips with the highest quality, top performance and greatest longevity potential are selected for SSDs, the most demanding of memory applications. With all the components, including controllers and DRAM, produced by Samsung, the quality of your SSD is assured. Advanced new firmware that optimizes how the components go together enables Samsung to serve up the right combination for your PC’s best performance and reliability.

Add style to your PC

With the Samsung 840 EVO you not only get optimal performance but top of the line design that emphasizes luxury and refinement. Unlike other SSDs that die-cast the surface using conventional CNC-milling, 840 EVO uses both new structural engineering and C-cutting to diamond-cut the premium titan surface for a sleek and stylish appearance. Watch your PC be reborn with a premium new look that expresses its powerful performance and efficiency.

Choose the capacity that’s right for you

With a wide range of capacities from a basic 120 GB, a rare offering of 750 GB, to the spacious 1 TB, 840 EVO helps you find the perfect SSD for your PC upgrade. If you were previously reluctant to upgrade to an SSD because the capacities were lacking, now is the time to reconsider your SSD options. Because it is offered in the same capacities as conventional HDDs, 840 EVO eliminates the need to scale up or scale down the size of your drive. 840 EVO comes in ample sizes of 750 GB and 1 TB to satisfy your extensive storage needs. Plus, 840 EVO gives you a real 1 TB drive running inside your computer rather than the 960 GB SSDs previously labeled as “1 TB drives.” Choose the right-sized SSD for your PC, all with the superb quality that a Samsung-made SSD can offer.

What's New:

  • Support advanced data security features(TCG/Opal and IEEE 1667)
  • Optimizing TurboWrite algorithm
  • Fixed compatibility issue with a certain program (PC doctor)
  • Optimized the noise immunity across the internal memory interfaces
  • Addressed the detection issue on certain systems

Download Notes:

  • Primary download contains an ISO file to be used as a bootable CD/DVD from DOS.
  • Secondary download contains a ZIP file to be used with the Samsung Magician software.

Previous Version EXT0BB0Q:

Supported Products:

  • MZ-7TE120BW
  • MZ-7TE120KW
  • MZ-7TE250BW
  • MZ-7TE250LW
  • MZ-7TE250KW
  • MZ-7TE500BW
  • MZ-7TE500LW
  • MZ-7TE750BW
  • MZ-7TE1T0BW

www.techspot.com

Samsung 840 EVO 250GB, 750GB SSD Review

Last year, I had the opportunity of reviewing the original Samsung 840, which I felt was a good effort on the Samsung’s part. Despite the challenges of being the first to market with a TLC NAND based SSD, the Samsung 840 was a decent product and catered very well to its target audience – the general consumer. While the Samsung 840 was a strong product for its intended audience, it wasn’t without its drawbacks – the biggest of which was the write performance.

Now, when it comes to the SSD market, no other SSD vendor out there is making as much noise as Samsung these days and less than 10 months after Samsung’s initial unveiling of the Samsung 840, they’ve introduced the successor, the Samsung 840 EVO.

Samsung 840 Evo Specifications

Samsung 840 EVO Samsung 840 EVO Samsung 840 EVO Capacity Controller NAND Sequential Reads Sequential Writes DRAM Cache Interface Warranty
120GB 250GB/500GB 750GB/1TB
Samsung S4LN045X01-8030 Samsung S4LN045X01-8030 Samsung S4LN045X01-8030
19nm Toggle Mode 2.0 TLC 19nm Toggle Mode 2.0 TLC 19nm Toggle Mode 2.0 TLC
530 MB/s 540 MB/s 540 MB/s
410 MB/s 520 MB/s 520 MB/s
256MB LPDDR2 512MB LPDDR2 1GB LPDDR2
SATA 6Gb/s SATA 6Gb/s SATA 6Gb/s
3 Years 3 Years 3 Years

Today we’ll be reviewing both the 250GB and the 750GB Samsung 840 EVO SSD; however, it’ll also be available in 120GB, 500GB and 1TB flavors as well when it becomes available in early August. As you may have noticed, the capacities here are identical to the capacities found on the original Samsung 840 with the exception that the 840 EVO now has both the 750GB and 1TB capacities.

Now what’s important about the 750GB and 1TB capacities is that Samsung is now a competitor to the recently introduced Crucial M500 SSD, which is available in up to the 960GB capacity. Previous to the introduction of the Curical M500, there really wasn’t much of an option for an SSDs greater than 512GB and if the option were available, the SSD was either terrible or it cost a fortune.

Samsung 830 vs Samsung 840 vs Samsung 840 Pro Specifications

Samsung 830 Samsung 840 Samsung 840 EVO Samsung 840 Pro Capacity Controller NAND Sequential Reads Sequential Writes Warranty
256GB 250GB 250GB 256GB
Samsung S4LJ204X01-Y040 (MCX) Samsung S4LN021X01-8030 (MDX) Samsung S4LN045X01-8030 (MEX) Samsung S4LN021X01-8030 (MDX)
27nm Toggle Mode 1.0 MLC 21nm Toggle Mode 2.0 TLC 19nm Toggle Mode 2.0 TLC 21nm Toggle Mode 2.0 MLC
520 MB/s 540 MB/s 540 MB/s 540 MB/s
400 MB/s 250 MB/s 520 MB/s 520 MB/s
3 Years 3 Years 3 Years 5 Years

Here’s a look at the Samsung SSD lineup along with specifications for each of the respective 2xxGB capacity drives. There are a couple different things to note here. First off, we’ve got a new controller on the Samsung 840 EVO. The Samsung 830 used a MCX controller, the 840 and 840 Pro used a MDX controller and now we’ve got a MEX controller with the 840 EVO. Second, we’ve got new NAND. The 840 EVO contains Samsung’s latest 19nm Toggle Mode 2.0 TLC (3 bits per cell) NAND which should help reduce power consumption and increase capacity.

Beyond the new hardware though, what should really catch your eye is the 840 EVO’s performance. Whereas sequential reads were fairly quick even on the original Samsung 840, sequential writes were quite slow, clocking in at only 250MB/s. With the Samsung 840 EVO, Samsung was able to double the write performance pushing sequential writes to a whopping 520MB/s, equaling performance found on the 840 Pro.

So you’re probably wondering how Samsung managed to to make the 840 EVO so much faster than the original 840 despite using similar performing NAND. The answer to this is twofold – the newer MEX controller and TurboWrite technology. The MEX controller is is pretty straightforward. It’s clocked 33% faster than the MDX controller and Samsung has made a number of tweaks to the firmware, which is why we see an increase in write performance. No surprise there.

On the other hand we also get TurboWrite technology, which is basically a caching solution for writes, which is how Samsung is able to double and even triple write performance of the 840 on the 840 EVO.

How TurboWrite technology works is pretty simple and it’s something we’ve already seen on the SanDisk Extreme II. Since Samsung already has a chunk of extra TLC NAND leftover from over-provisioning, they’ve simply converted this NAND into a simulated SLC high performance buffer (aka a cache). Unfortunately doing so requires a sacrifice of 66% of the NAND so the 1TB edition of the 840 EVO loses a whopping 36GB for only 12GB of simulated SLC; however, the simulated SLC is significantly faster than the TLC in the main SSD storage which is why TurboWrite works. All writes from the host then go straight into the simulated SLC high performance buffer then when the host goes idle, the buffer gets flushed into the main TLC storage area of the SSD.

Now Samsung has predefined the TurboWrite buffer size, which is based off the 840 EVO’s capacity; however, based on their internal testing, they believe that a 3GB buffer should be enough for general everyday use.

If any writes exceed the buffer’s capacity, the SSD will then default to after Turbo-Write performance shown on the table above. Let’s move on…

For our review today, we’ll be taking a look at both the 750GB and 250GB capacities of the Samsung 840 EVO. The Samsung 840 EVO will be available in 120GB, 150GB, 250GB, 500GB, 750GB, and a whopping 1TB. Here’s a look at the packaging for the Samsung 840 EVO. The units I have are bare drives only, but similar to the original 840 notebook upgrade and desktop upgrade editions will be available as well.

Opening up the packaging, we find the Samsung 840 EVO. For the 840 EVO, Samsung used a matte grey type of color despite using a similar design to the 840 and 840 Pro.

 

Flipping over the 840 EVO, we get a sticker with all the information about the SSD. In order to open it up, the sticker must be broken, voiding the warranty.

Here we get the SATA power and SATA 6Gb/s port in its usual spot. The Samsung 840 EVO is capable of fully utilizing SATA 6Gb/s, so to take advantage of the SSD’s full performance, make sure to connect the SSD to a SATA 6Gb/s port on your motherboard.

While Samsung didn’t provide us with full desktop or notebook upgrade kits with our sample units, they did provide us with the accessories that normally come with the upgrade kits.

Along with some documentation, the notebook upgrade kit will include a 2mm riser (for notebooks with 9mm drive slots only) and a USB 3.0 to SATA adapter. This is an upgrade from the USB 2.0 adapter included with the older Samsung 840 and 840 Pro notebook upgrade kits.

For the desktop upgrade kit, you’ll still receive documentation, but instead of the riser and the USB 3.0 to SATA adapter, you’ll be receiving a 2.5″ to 3.5″ adapter, some mounting hardware, and a SATA cable.

Opening up the Samsung 840 EVO 250GB, it’s quite interesting to note just how small the PCB is. Let’s take a closer look.

Unlike the original Samsung 840 and 840 Pro, the 840 EVO makes use of both sides of the PCB rather than a single side. For the 250GB edition, Samsung is only using two NAND packages, the MEX controller, and 512MB of DRAM. Let’s take an even closer look.

Here’s a closer look at the new MEX controller for the Samsung 840 EVO (Model #S4LN045X01-8030). The new MEX controller is an upgrade to the MDX controller found on the 840 and 840 Pro. Like the MDX controller, the MEX controller utilizes a 3-core ARM Cortex-R4 implementation; however, the MEX controller is clocked at 400MHz, which is 100MHz (33%) faster than the 300MHz MDX controller. In addition to the increased clock speeds, the MEX controller also features upgraded signal processing, which is expected to help increase longevity of the TLC NAND.

Right above the controller, Samsung has also included an in house 512MB of LPDDR2 (Model #K4P46324EB-FGC2), which serves as a DRAM cache.

Finally, we also get Samsung’s latest 128Gb 19nm Toggle Mode 2.0 TLC NAND (Model #K90KGY8S7M). For the 250GB edition, Samsung is only using two NAND packages, which pegs each NAND package as carrying a whopping 128GB. Similar to the last generation 21nm Toggle Mode 2.0 TLC NAND, the new 19nm TLC NAND is capable of transfer rates up to 400Mbps.

Samsung 840 EVO 750GB

Here’s a look at the PCB for the Samsung 840 EVO 750GB SSD. Since we’ve got a whole lot more capacity here in comparison to the 250GB edition of the SSD, the PCB is significantly larger here although it’s not quite a full sized PCB.

Like the 250GB 840 EVO, the 750GB 840 EVO also utilizes both sides of the PCB. The front of the PCB includes the new MEX controller, a 1GB DRAM cache along with 4 NAND chips on each side (8 NAND chips total). Let’s take a closer look.

Here’s a look at the MEX controller on the 750GB Samsung 840 EVO. It’s identical to the one on the 250GB edition, so let’s move on.

Here’s a look at the DRAM cache on the 750GB Samsung 840 EVO. The 750GB and the 1TB edition of the Samsung 840 EVO use a Samsung 1GB LPDDR2 DRAM cache (Model #K4P8G304EB-FGC2) in order to support the larger capacity.

Finally, here’s a look at the NAND packages onboard the 750GB Samsung 840 EVO. Samsung is still using their latest 128Gb 19nm Toggle Mode TLC NAND here (Model #K90KGY8S7M-CCK0). The K90KGY8S7M-CCK0 NAND packages each carry 128GB to make up 512GB.

Since this is a 750GB drive, where’s the rest of the NAND? Well, since Samsung doesn’t make 96GB NAND packages, they’re using 4 additional 64Gb 19nm Toggle Mode TLC NAND packages (Model #K9CHGY8S5M-CCK0) to make up an additional 256GB to make 768GB.

Special thanks to CyberPowerPC, Kingston, OCZ Technology and HSPC for sponsoring our test bench!

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

ATTO Disk Benchmark is one of the industry’s oldest and most popular benchmarks for testing disk read/write speeds. This benchmarks allows read and write testing using predefined block sizes and gives us a good idea of read/write speeds with different sized files. Most SSD manufacturers these days prefer using this benchmark when advertising SSDs as it tests using compressible data, which tends to yield better performance.

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

Performance Analysis

Both the 250GB and 750GB editions of the 840 EVO performed extremely well in ATTO Disk Benchmark, pushing a maximum of 530MB/s+ writes and 530MB/s+ reads. From what I can see here, it’s quite difficult to distinguish between the 840 EVO and the higher end 840 Pro.

Crystal Disk Mark is another popular benchmark which allows us to measure both sequential read/write speeds as well as random read/write speeds. With this benchmark, tests can be run using both random fill (incompressible data) and 0 fill (compressible data). Realistically in typical computer usage scenarios, data being transferred will consist of a mixture of both incompressible and compressible data.

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

Performance Analysis

Crystal Disk Mark performance is similar between both the 250GB and 750GB capacities of the 840 EVO. As usual with any non-SandForce based SSD, compression doesn’t affect performance at all. What’s extremely important to note however, is the blazing fast 4K read and 4K write performance. With the original Samsung 840, write performance in general was lacking; however, with the 840 EVO we get 4K write performance that can top even the fastest SATA based SSDs on the market.

AS SSD is a very commonly used benchmark used to measure SSD performance in a number of categories. Here, tests are run using incompressible data, which most simulate real world usage. It also outputs a final score at the conclusion of the test based off the read and write performance of the drive.

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

Performance Analysis

Because the Samsung 840 EVO doesn’t use compression and is capable of posting incredible sequential and 4k performance, it scores extremely high in our AS SSD testing, pushing performance numbers that rival that of top tier SSDs such as the 840 Pro and the OCZ Vector.

Anvil Storage Utilities is an excellent all around benchmark for testing many different functions of SSD performance. For our purposes, we ran the benchmark through both 0 fill mode (compressible data) on the left and 100% compression (incompressible data) on the right.

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

Performance Analysis

Firing up Anvil Storage Utilities, we confirm a lot of our earlier findings on the performance of the 840 EVO. Read/write performance here is top notch and the drive is capable of pushing performance similar to the 840 Pro.

The PC Mark 7 storage test tests the SSD under many different real world tests such as gaming, video editing, etc. This is most representative of the SSD’s performance under real world situations.

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

PC Mark 8

The PC Mark 8 storage test is extremely similar to storage test found in PC Mark 7. The PC Mark 8 storage test tests SSDs under many real world applications such as gaming, video editing, photo editing, etc.

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

Performance Analysis

As expected, the Samsung 840 EVO performed quite well in our PC Mark 7/8 testing as it far outperforms the 840 and is capable of performance almost similar to that of the 840 Pro. Since PC Mark is more representative of real world testing, it deals with a lot of 4K reads/writes along with sequential read/writes under 3GB. Because of this, performance here is extremely good as the 840 EVO does extremely well in both areas.

Before I wrap up on performance testing, I also wanted to test the TurboWrite cache to see the difference in write performance when a file greater than the write cache is written to the drive. According to Samsung, the TurboWrite buffer for the 250GB 840 EVO is 3GB while the TurboWrite buffer for the 750GB 840 EVO is 9GB.

For testing then, I ran Anvil Storage Utilities with a 32GB testfile for both the 250GB 840 EVO and the 750GB 840 EVO in order to fill up the buffer to reach after TurboWrite write speeds.

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

Performance Analysis

As we can see above, the 750GB 840 EVO’s write performance drops to ~400MB/s once the TurboWrite buffer is filled to capacity, which is roughly 100MB/s slower than the TurboWrite enabled performance. The 250GB 840 EVO’s write performance on the other hand drops to a mere 265MB/s once the TurboWrite buffer is filled to capacity, which is nearly 50% slower than the TurboWrite enabled performance. Luckily, the chances of continuously writing greater than 3GB of data in a general consumer scenario is quite rare, so generally performance should be at the TurboWrite enabled performance rather than the after TurboWrite performance.

For power consumption testing, we run three tests which consists of idle power consumption, maximum read power consumption, and maximum write power consumption. Real world power consumption will generally fall between the idle and maximum power consumption figures.

All tests below are measured by tapping directly into the 5v line running from the power supply to the drive. All testing here is conducted with “HIPM/DIPM” enabled and “AHCI Link Power Management – Adaptive” set to 0 milliseconds for maximum power efficiency.

Performance Analysis

Samsung drives have always dominated the charts when it comes to idle power consumption and once again with the Samsung 840 EVO Samsung is dominating the charts by a wide margin. With idle power consumption of 0.045w for the 250GB model and 0.075 for the 750GB model, there’s really no other SSD other than Samsung’s own MDX controlled 840 Pro that even comes close. What’s quite impressive is that despite the new MEX controller having a 100MHz faster clock speed than the older MDX controller, the 250GB 840 EVO is capable of besting the 840 Pro’s already impressive 0.05w by reducing idle power draw by 0.005w.

As for load power consumption, the Samsung 840 EVO and the Samsung 840 Pro is once again the most power efficient SSDs tested today. That said, idle power consumption is much more of an important figure as SSDs sit idle for a majority of the time during typical computer use.

Last year during Samsung’s 2012 Global SSD Summit, Samsung first introduced their latest SSD software utility – Samsung Magician 4.0, which promised a new UI along with greater ease of use. While the Magician 4.0 software didn’t end up officially launching until early this year, it’s now being refined and updated to version 4.2. Here’s a look at the software along with some highlights of the features.

Here’s a look at the main screen when the Magician software is launched. There are a couple cool little stats here along with some SSD optimization information.

The second tab on the left is the “Performance Benchmark” to benchmark the performance of the SSD. The utility itself is quite simple as all you need to do is hit the start button and allow about a minute for the test to run. If the SSD is underperforming in any benchmark, the benchmark utility will suggest that you run the “Performance Optimization” or “OS Optimization” feature.

The third tab on the left is the “Performance Optimization” tab, which issues a TRIM command on the SSD. It’s pretty easy to run by hitting the start button although it shouldn’t be necessary as the SSD conducts its own garbage collection automatically.

The fourth tab is the firmware update tab which should be self explanatory. If a firmware update is available, a button will appear allowing you to update.

The fifth tab is the OS Optimization tab, which will allow you to easily change settings to optimize the OS for use with SSDs. The software includes the option as well as an explanation on the side, so it’s extremely easy to use. You can also go the easy route and use one of the preset profiles. Doesn’t get any easier than “Maximum Performance”, “Maximum Capacity”, and “Maximum Reliability”.

The sixth tab is to adjust the level of over provisioning on the drive. For most users, this should be unnecessary.

The seventh tab is for doing secure erase on the SSD. This is the most efficient way to securely erase all data on the SSD.

Finally, we have the last tab which brings us into an amazing little feature called RAPID mode. More on that when you flip the page…

Late last year, Samsung acquired a company called NVELO, the company most well known for their Dataplex SSD caching software. At the time, we didn’t know what was going to happen to the company whether Samsung would continue to develop Dataplex or use it for their own purposes, but with the introduction of RAPID mode along with the announcement of the Samsung 840 EVO, it’s clear that the NVELO acquisition has been put to good use.

Included with the new Samsung Magician 4.2 software is RAPID mode, which stands for Real-time Accelerated Processing of I/O Data. The name itself sounds a bit gimmicky sorta like the turbo button on older PCs, but I assure you it’s definitely not. Basically since computers today are extremely well equipped with high performance hardware, RAPID mode is able to leverage the host PC’s additional CPU and memory resources as a caching solution to effectively help improve SSD performance.

As you can see above, RAPID mode for the end user is extremely simple. As long as you meet the minimum requirements, it’s simply an enable or a disable. That’s it. Unfortunately, only the 840 EVO is supported at this time, only a single 840 EVO can be accelerated, and RAIDed SSDs are not supported either. Otherwise, it should work on any relatively modern PC/notebook.

That said, we went ahead and enabled RAPID mode on our test system and ran a couple tests to see just how effective RAPID mode really is. Let’s take a look…

Samsung 840 EVO 250GB

Samsung 840 EVO 750GB

Performance Analysis

From what I can see above, RAPID mode is simply phenomenal to say the least. In Anvil Storage Utilities, RAPID mode was able to push sequential read/write performance to nearly 1GB/s, which is nearly double the performance of the 840 EVO by itself. Similarly, 4K figures are sky high as well with the 750GB 840 EVO pushing an unheard of 159,688 4K write IOPS despite the SSD itself being limited to the SATA 6Gb/s interface.

Last year when Samsung first introduced the original 840 SSD, I had two reservations with the drive – performance and reliability. With the Samsung 840 EVO, I think Samsung has done a great job addressing both fronts, so let’s start with performance. When we originally reviewed the Samsung 840, it was apparent that write performance on the drive was slow. Pushing only 250MB/s writes at a time when most other SSDs were breaking the 300MB/s, 400MB/s, and even 500MB/s range, the original 840 was only serious competition for drives based off of asynchronous NAND. However, with the Samsung 840 EVO, Samsung has really leveraged the fact that they own every part of the SSD from the controller and firmware to the NAND to overcome the performance limitations inherent in TLC NAND. With Samsung’s addition of TurboWrite Technology into the 840 EVO, they’ve been accelerate write performance in any application that can fit into the cache space, pushing both read/write performance up to 500MB/s depending on the capacity of the drive. In testing, this was certainly the case and with most client reads and writes being under 3GB, Samsung’s caching solution on the 840 Evo does in fact make a whole lot of sense.

Additionally there’s also RAPID mode, which is like a cache in addition to the cache, which makes everything really damn fast. RAPID mode’s ability to accelerate the 840 EVO’s performance far beyond the limits of the SATA 6Gb/s interface is astounding and I feel like it’s a huge value add especially for those only planning on running a single drive. Hopefully RAPID is something that’ll be rolled out for other SSDs in Samsung’s lineup down the line so those with 830’s, 840’s and 840 Pro’s will have access to the technology.

The second concern I had for the original Samsung 840 was reliability and with my own testing, Samsung’s internal testing, and monitoring of reviews on Amazon and Newegg, I’m a whole lot more comfortable recommending TLC NAND based drives compared to a year ago when the technology was fairly new. Samsung claims that based on their internal reliability testing of their TLC NAND, it’s been tested at 2,500 P/E cycles (… and counting), so reliability shouldn’t be a concern, especially with the new MEX controller’s more advanced signal processing.

Warranty on the Samsung 840 EVO is still the same 3 years offered with the 840 rather than the 5 years offered with the 840 Pro. Personally, I think Samsung being as confident as they are in their TLC NAND technology should be throwing in a 5 year warranty as a show of confidence for the durability of the NAND, but honestly 3 years is probably upgrade time for a vast majority of customers out there.

The Samsung 840 EVO should be available at retailers around the beginning to mid August, so actual street pricing isn’t available quite yet; however, Samsung is saying that pricing will be identical to the 840. Since the Samsung 840 EVO will be replacing the Samsung 840 as the entry level, budget oriented drive, competitors will likely be either older SandForce based SSDs such as the SanDisk Extreme, Kingston HyperX 3K, or Crucial’s M500. From a capacity standpoint, the main competitor for the 750GB and 1TB Samsung 840 EVO will be the Crucial M500, which is offered up to a 960GB capacity.

Overall I feel like the Samsung’s 840 EVO is one is a big step forward for Samsung bringing top tier performance to the entry level pricepoint. Those looking for absolute performance and reliability should still opt for the Samsung 840 Pro if possible, although I’d take a good hard look at the 840 EVO as well. The Samsung  840 EVO will provide most customers and enthusiasts plenty of performance, and as far as I’m concerned, it’s the new standard for an entry level SSD. I simply don’t see why you’d go with anything else. Highly Recommended!

Sample provided by: Samsung

Available at: TBD – Early August

www.custompcreview.com

Samsung SSD 860 EVO | Samsung V-NAND Consumer SSD | Samsung Semiconductor Global Website

* Sources: NPD (US data from Jan. 2015 to Oct. 2017) and GfK (EU5 data from Jan. 2015 to Sep. 2017, China data from Jan. 2016 to Sep. 2017)

* Performance may vary based on SSD’s firmware version and system hardware & configuration. Sequential write performance measurements are based on Intelligent TurboWrite technology. Sequential performance measurements based on CrystalDiskMark v.5.0.2 and IOmeter 1.1.0. The sequential write performances after Intelligent TurboWrite region are 300 MB/s for 250/500 GB and 500 MB/s for 1 TB.

* Test system configuration: Intel Core i5-3550 CPU @ 3.3 GHz, DDR3 1333 MHz 4 GB, OS – Windows 7 Ultimate x64, Chipset: ASUS P8H77-V

* The TurboWrite buffer size varies based on the capacity of the SSD; 12 GB for 250 GB model, 22 GB for 500 GB model, 42 GB for 1 TB model and 78 GB for 2/4 TB. For more information on the TurboWrite, please visit www.samsungssd.com.

* Warrantied TBW for 860 EVO: 150 TBW for 250 GB model, 300 TBW for 500 GB model, 600 TBW for 1 TB model, 1,200 TBW for 2 TB model and 2,400 TBW for 4 TB model.

* 5-years or TBW, whichever comes first. For more information on the warranty, please find the enclosed warranty statement in the package

Samsung Magician software is designed to help you manage your SSD with a simple and intuitive user interface.

Get notifications when new firmware is released, and easily install updates for enhanced performance, stability, and compatibility.

Check your SSD's sequential and random read/write speeds, so you can maintain superb performance.

Protect data by selecting security options. The 860 EVO supports AES 256-bit hardware-based encryption and is compliant with TCG Opal and IEEE 1667.

Samsung Magician software is designed to help you manage your SSD with a simple and intuitive user interface.

Get notifications when new firmware is released, and easily install updates for enhanced performance, stability, and compatibility.

Check your SSD's sequential and random read/write speeds, so you can maintain superb performance.

Protect data by selecting security options. The 860 EVO supports AES 256-bit hardware-based encryption and is compliant with TCG Opal and IEEE 1667.

  • Form Factor
  • 2.5 inch, mSATA, M.2
  • Capacity
  • 250 GB, 500 GB, 1,000 GB, 2,000 GB, 4,000 GB
  • Sequential Read Speed
  • Up to 550 MB/sec
  • Sequential Write Speed
  • Up to 520 MB/sec
SHOW MORE SPECS (2.5-Inch) layer open
  • Client PCs

  • 2.5 inch

  • SATA 6Gb/s (compatible with SATA 3Gb/s & SATA 1.5Gb/s)

  • 100 X 69.85 X 6.8 (mm)

  • 250 GB, 500 GB: Max 50.0g 1TB: Max 51.0g 2TB: Max 60.0g

    4TB: Max 62.0g

  • Samsung V-NAND 3bit MLC

  • Samsung MJX Controller

  • 512 MB Low Power DDR4 SDRAM (250 GB, 500 GB) 1 GB Low Power DDR4 SDRAM (1,000 GB) 2 GB Low Power DDR4 SDRAM (2,000 GB) 4 GB Low Power DDR4 SDRAM (4,000 GB)

    • Yes

    • Yes

    • Auto Garbage Collection Algorithm

    • AES 256-bit Encryption (Class 0) TCG/Opal IEEE1667 (Encrypted drive)

    • Yes

    • Yes

    • Up to 550 MB/s

    • Up to 520 MB/s

    • Up to 98,000 IOPS

    • Up to 90,000 IOPS

    • Up to 10,000 IOPS

    • Up to 42,000 IOPS

    • 250 GB: Average 2.2 W Maximum 4.0 W 500 GB: Average 2.5 W Maximum 4.0 W 1,000 GB: Average 3.0 W Maximum 4.0 W 2,000 GB: Average 3.0 W Maximum 4.0 W 4,000 GB: Average 3.0 W Maximum 4.0 W

      (Burst mode)

    • Max. 50mW

    • Max. 2mW

    • 5V ± 5% Allowable voltage

    • 1.5 Million Hours Reliability

    • 0 - 70 ℃

    • 1,500 G & 0.5 ms (Half sine)

    • Magician Software for SSD management

    • 5 Years or 150 TBW

    • 5 Years or 300 TBW

    • 5 Years or 600 TBW

    • 5 Year or 1,200 TBW

    • 5 Year or 2,400 TBW

    SHOW MORE SPECS (mSATA) layer open
    • Client PCs

    • mSATA

    • SATA 6Gb/s (compatible with SATA 3Gb/s & SATA 1.5Gb/s)

    • (29.85±0.15) x (50.80±0.15) x Max 3.85 (mm)

    • Max. 8.5g

    • Samsung V-NAND 3bit MLC

    • Samsung MJX Controller

    • 512 MB Low Power DDR4 SDRAM (250 GB, 500 GB)

      1 GB Low Power DDR4 SDRAM (1,000 GB)

    • Yes

    • Yes

    • Auto Garbage Collection Algorithm

    • AES 256-bit Encryption (Class 0) TCG/Opal IEEE1667 (Encrypted drive)

    • Yes

    • Yes

    • Up to 550 MB/s

    • Up to 520 MB/s

    • Up to 97,000 IOPS

    • Up to 88,000 IOPS

    • Up to 10,000 IOPS

    • Up to 42,000 IOPS

    • 250 GB: Average 2.2 W Maximum 4.5 W 500 GB: Average 2.5 W Maximum 4.5 W 1,000 GB: Average 3.0 W Maximum 4.5 W

      (Burst mode)

    • Max. 50mW

    • Max. 2mW

    • 3.3V ± 5% Allowable voltage

    • 1.5 Million Hours Reliability

    • 0 - 70 ℃

    • 1,500 G & 0.5 ms (Half sine)

    • Magician Software for SSD management

    • 5 Years or 150 TBW

    • 5 Years or 300 TBW

    • 5 Years or 600 TBW

    Show More Specs (M.2) layer open
    • Client PCs

    • M.2

    • SATA 6Gb/s (compatible with SATA 3Gb/s & SATA 1.5Gb/s)

    • Max 80.15 x 22.15 x 2.38 (mm)

    • Max. 8.0g

    • Samsung V-NAND 3bit MLC

    • Samsung MJX Controller

    • 512 MB Low Power DDR4 SDRAM (250 GB, 500 GB)

      1 GB Low Power DDR4 SDRAM (1,000 GB, 2,000 GB)

    • Yes

    • Yes

    • Auto Garbage Collection Algorithm

    • AES 256-bit Encryption (Class 0) TCG/Opal IEEE1667 (Encrypted drive)

    • Yes

    • Yes

    • Up to 550 MB/s

    • Up to 520 MB/s

    • Up to 97,000 IOPS

    • Up to 88,000 IOPS

    • Up to 10,000 IOPS

    • Up to 42,000 IOPS

    • 250 GB: Average 2.2 W Maximum 4.0 W 500 GB: Average 2.5 W Maximum 4.0 W 1,000 GB: Average 3.0 W Maximum 4.5 W 2,000 GB: Average 3.0 W Maximum 4.5 W

      (Burst mode)

    • Max. 50mW

    • Max. 2mW

    • 3.3V ± 5% Allowable voltage

    • 1.5 Million Hours Reliability

    • 0 - 70 ℃

    • 1,500 G & 0.5 ms (Half sine)

    • Magician Software for SSD management

    • 5 Years or 150 TBW

    • 5 Years or 300 TBW

    • 5 Years or 600 TBW

    • 5 Years or 1,200 TBW

    www.samsung.com

    Samsung 840 EVO SSD Review | StorageReview.com

    The Samsung 840 Evo is the company's latest mainstream SSD that differentiates itself in the market with features and components that benefit from Samsung's vertical integration approach including its own 19nm 128Gb TLC NAND, proprietary firmware and newest-gen multi-core MEX controller. Capacities on the 840 Evo range from 120GB all the way up to a full 1TB model, and the drive also implements an updated version of Samsung Magician (v. 4.2) that enables users to easily migrate to the SSD and manage it once it's in use. Samsung is also quoting much higher performance figures on the slim, 7mm z-Height 840 Evo than with the previous generation Samsung 840 - up to 1.5-3x the sequential write rates.

    While Samsung quoted sequential read activity performance as largely unchanged at 540MB/s across capacities (vs. 530/540/540 respective to capacity last generation), the significant enhancement comes in sequential writes. At the 120GB capacity, the 840 produced 130MB/s versus the 840 Evo which hits 410MB/s, and at 250GB we now see 520MB/s, up from 250MB/s. Further, the 500GB 840 managed 330MB/s, while the 840 Evo in its top capacities of 500GB, 750GB and 1TB registers 520MB/s. This performance delta is largely achieved by implementing Turbo Write which is always-on and utilizes the NAND packages to create a buffer up to 12GB in size to which data is first written before later being transferred to the SSD when there is idle time. The buffer varies by capacity at 3GB for 120 and 250GB, 6GB at 500GB, 9GB at 750GB and 12GB at the top-tier 1TB model.

    Another performance driver is RAPID Mode which comes from utilizing DRAM to accelerate transfers and is a result of Samsung's recent acquisition of NVELO. This new feature can be found in Samsung Magician 4.2 which we have reviewed seperately. Essentially, the software utilizes up to 1GB of DRAM from the host system as a cache for hot data that is consistently accessed in order to deliver hastened performance. At launch, the software will support the 840 Evo, and Samsung expects the 840 Pro to be included later, though the Samsung 840 will likely not get supported as the drive is being replaced in market by the Evo.

    Samsung's wager that consumers would embrace a TLC NAND based SSD and accept its lower endurance ratings in favor of decreased $/GB pricing has paid off. As we noted in our initial 840 Evo news coverage from the Samsung event in Seoul, TLC NAND has only been used up to this point in lower-cost application such as flash drives and memory cards. Other companies have discussed implementing TLC NAND, but only Samsung has delivered a product to market. For most consumers, price-points are barriers to adoption, and many of them have had the belief that they would write far more data to their drive than they actually do. With the 840 Evo's low cost (same pricing as the previous generation), 3 year warranty, and Samsung's vertical integration that enables them to provide a complete solution with solid support, the 840 Evo SSD will likely continue to drive Samsung's SSD market share.

    The Samsung 840 Evo SSD has a 3 year warranty. Pricing for the 120GB is $109.99, 250GB is $189.99, 500GB is $369.99, 750GB is $529.99 and 1TB is $649.99. Our review models include the 250GB, 500GB and 1TB capacities. 

    Samsung 840 Evo SSD Specifications

    • Capacities: 120GB, 250GB, 500GB, 750GB, 1TB
    • Form Factor: 2.5-inch, 7mm
    • Interface: SATA 6Gb/s
    • Controller: 3-core MEX controller (400MHz)
    • Performance
      • 120GB
        • Sequential READ: up to 540 MB/s
        • Sequential 128KB WRITE: up to 410 MB/s
        • Random READ: up to 94,000 IOPS
        • Random WRITE: up to 35,000 IOPS
      • 250GB
        • Sequential READ: up to 540 MB/s
        • Sequential WRITE: up to 520 MB/s
        • Random READ: up to 97,000 IOPS
        • Random WRITE: up to 66,000 IOPS
      • 500GB
        • Sequential READ: up to 540 MB/s
        • Sequential WRITE: up to 520 MB/s
        • Random READ: up to 98,000 IOPS
        • Random WRITE: up to 90,000 IOPS
      • 750GB
        • Sequential READ: up to 540 MB/s
        • Sequential WRITE: up to 520 MB/s
        • Random READ: up to 98,000 IOPS
        • Random WRITE: up to 90,000 IOPS
      • 1TB
        • Sequential READ: up to 540 MB/s
        • Sequential WRITE: up to 520 MB/s
        • Random READ: up to 98,000 IOPS
        • Random WRITE: up to 90,000 IOPS
      • Warranty: 3 years

    Design and Build

    The Samsung 840 Evo SSD's design follows in line with the existing 840 series models (the Samsung SSD 840 and Samsung SDD 840 Pro). The 840 Evo features a solid metal construction for a rigid composition, and at its 7mm z-Height, it supports a host of applications such as notebooks, desktops, and even ultrabooks.

    The top of the 840 Evo features Samsung SSD branding, while the bottom of the drive features the product information label that provides relevant information including the capacity and serial number. The side profiles expose the four screw holes that enable the 840 Evo to be mounted with ease.

    Removing the cover is simple; there are 3 screws, two of which are hidden under the product label. The 840 Evo implements a new 400 MHz MEX controller, the Samsung MEX S4LN045X01-803, which is 100MHz faster than the 840 and 840 Pro's controller. The storage comes from 19nm, 128-bit TLC NAND. In the 250GB model, there are 2x128GB NAND packages, while the 500GB utilizes the 4x128GB and the 1TB has 8x128GB packages.

    DRAM is 512MB on the 250GB and 500GB models and comes via the Samsung K4P4G324EB-FGC2 module. DRAM is pushed to 1GB on the 1TB model.

    Consumer Synthetic Benchmarks 

    All consumer SSD benchmarks are conducted with the StorageReview Consumer Testing Platform. With the Samsung 840 Evo SSD, we tested the drive raw, without activating RAPID mode so we could better gauge the drive's native performance. Our review of the Samsung Magician 4.2 software includes testing of the 840 Evo utilizing RAPID mode. The comparables used for the review below include:

    • Crucial M500 (960GB, Marvell 9187, Micron 20nm MLC NAND, SATA)
    • OCZ Vector (256GB, Indilinx IDX500M00-BC Barefoot 3, 25nm MLC NAND, SATA)
    • SanDisk Extreme SSD (240GB, SandForce SF-2281, SanDisk 24nm MLC Toggle NAND, SATA)
    • Samsung SSD 840 (250GB, 500GB, 300MHz Samsung 3-core MCX controller, Samsung TLC NAND Flash, SATA)
    • Samsung SSD 840 Pro (512GB, 300MHz Samsung 3-core MCX controller, Samsung 2x nm Toggle NAND Flash, SATA)

    All IOMeter figures are represented as binary figures for MB/s speeds.

    In our first test measuring 2MB sequential performance, the Samsung 840 Evo SSD 1TB measured 503.80MB/s read and 485.32MB/s write, while the Samsung 840 Evo SSD 500GB measured 492.50MB/s read and 483.36MB/s write. The Samsung 840 Evo SSD 1TB outperformed the Crucial M500 960GB, and though the 840 Evo 500GB didn't quite equal the read performance of the first-gen 840, it offered far greater write activity performance.

    In our next test looking at 2MB random transfer performance, the Samsung 840 Evo 1TB measured 493.44MB/s read and 477.78MB/s write, while the Samsung 840 Evo 500GB measured 492.48MB/s read and 475.79MB/s write. The Evo 1TB again outperformed the Crucial M500 960GB by a decent margin. This time, the Evo 500GB performed greater than the first-gen 840 500GB in both categories, and again was far superior in write activity.

    Switching to smaller 4k random transfers, the Samsung 840 Evo 1TB measured 10,023.23 IOPS for read activity and 22481.61 for write activity, while the Samsung 840 Evo 500GB measured 10,080.90 for reads and 22,772.20 for writes. The 1TB again outpaced the Crucial M500 960GB, this time by a margin of about 4,000 IOPS in both read and write activity. The 500GB Evo outpaced the first-gen 840 by about 3,000 IOPS for read activity and 5,000 IOPS for write activity.

    In our next test, we shift to a smaller 4k random workload with 100% read activity that scales from 1QD to 64QD. In this setting, the Samsung 840 Evo 1TB measured from 10,025.62 IOPS up to nearly 98,000 IOPS. The Evo 500GB measured 10,123.44 IOPS up to nearly 98,000 IOPS as well. These figures rank near the top of the group, especially the 1QD marks that hit higher than all of the comparables by a few thousand IOPS.

    Shifting focus to write activity, the Samsung 840 Evo 1TB measured 25,455.64 IOPS at QD1 and peaked at just under 89,000 IOPS in the terminal queue depths. The 500GB model measured 23,278.82 IOPS and peaked at just over 89,000 IOPS in the terminal queue depths. The QD1 figures are again much higher than those from the competition, and the terminal queue figures stayed stronger as well.

    Comparing average write latency between each mainstream consumer SSD, the Samsung 840 Evo 1TB had a response time of 0.0439ms and a super-low peak latency of 0.867ms. The 500GB registered a response time of 0.0434ms and a peak latency that while higher than the 1TB, is still quite low at 2.189ms. The averages were the lowest in the group, and the 1TB Evo delivered the lowest Max as well.

    Our last series of synthetic benchmarks compare the hard drives in a series of server mixed-workloads with a queue depth of ranging from 1 to 128. Each of our server profile tests has a strong preference towards read activity, ranging from 67% read with our database profile to 100% read in our web server profile. In all of our mixed workloads the Samsung SSD 840 ranked at the bottom of the pack except the Web Server profile where the 840 and 840 Pro drives were highly successful.

    The first is our database profile; with a 67% read and 33% write workload mix primarily centered on 8K transfer sizes. In the test, only the OCZ Vector outperformed the Samsung 840 Evo drives in the terminal queue depths, and the 840 Evo drives had the greatest performance from the outset in QD1.

    The next profile looks at a file server, with 80% read and 20% write workload spread out over multiple transfer sizes ranging from 512-byte to 64KB. The Samsung 840 Evo drives delivered the best QD1 throughput, and they were right up near the top along with the OCZ Vector in the terminal queue depths.

    Our web server profile is read-only with a spread of transfer sizes from 512-byte to 512KB. Again, the Samsung 840 Evo drives provided the greatest QD1 performance, and they were right at the top of the group QD128 also, falling marginally short of the top spots.

    The last profile looks at workstation activity, with a 20% write and 80% read mixture using 8K transfers. In QD1, the Samsung 840 Evo drives approached the 10,000 IOPS mark, and they ended up again just short of the OCZ Vector but above the rest of the drives.

    Consumer Real-World Benchmarks

    For the average consumer, trying to translate random 4K write speeds into an everyday situation is pretty difficult. It helps when comparing drives in every setting possible, but it doesn't exactly work out into faster everyday usage or better game loading times. For this reason we turned to our StorageMark 2010 traces, which include HTPC, Productivity, and Gaming traces to help readers find out how a drive might rank under these conditions.

    The first real-life test is our HTPC scenario. In this test we include: playing one 720P HD movie in Media Player Classic, one 480P SD movie playing in VLC, three movies downloading simultaneously through iTunes, and one 1080i HDTV stream being recorded through Windows Media Center over a 15 minute period. Higher IOps and MB/s rates with lower latency times are preferred. In this trace we recorded 2,986MB being written to the drive and 1,924MB being read.

    In our HTPC profile, the Samsung 840 Evo 1TB and 500GB out-performed the Crucial M500 960GB and 840 first-gen 500GB almost 2:1, respectively. The 1TB Evo provided an average speed of 376.96MB/s, while the 500GB hit 379.16MB/s. The SanDisk Extreme provided the best overall figures.

    Our second real-life test covers disk activity in a productivity scenario. For all intents and purposes this test shows drive performance under normal daily activity for most users. This test includes: a three hour period operating in an office productivity environment with 32-bit Vista running Outlook 2007 connected to an Exchange server, web browsing using Chrome and IE8, editing files within Office 2007, viewing PDFs in Adobe Reader, and an hour of local music playback with two hours of additional online music via Pandora. In this trace we recorded 4,830MB being written to the drive and 2,758MB being read.

    In our Productivity trace, the Samsung 840 Evo 1TB registered 349.39MB/s, which was about triple the performance of the Crucial M500. The Evo 500GB averaged 335.16MB/s, which was more than double the 840 first-gen.

    Our third real-life test covers disk activity in a gaming environment. Unlike the HTPC or Productivity trace, this one relies heavily on the read performance of a drive. To give a simple breakdown of read/write percentages, the HTPC test is 64% write, 36% read, the Productivity test is 59% write and 41% read, while the gaming trace is 6% write and 94% read. The test consists of a Windows 7 Ultimate 64-bit system pre-configured with Steam, with Grand Theft Auto 4, Left 4 Dead 2, and Mass Effect 2 already downloaded and installed. The trace captures the heavy read activity of each game loading from the start, as well as textures as the game progresses. In this trace we recorded 426MB being written to the drive and 7,235MB being read.

    In our read-intensive Gaming trace, the Samsung 840 Evo 1TB produced 486.14MB/s and the 500GB hit 485.38MB/s. These figures were in-line with the rest of the group which all performed with more than 400MB/s. This is attributable to the Gaming trace being almost all read (94%).

    Power Consumption

    As SSDs spend much of their time in the idle state, low idle power consumption is a key factor in overall SSD power management.

    In our tests, we measured idle power consumption from the Samsung 840 Evo 1TB at 0.31W, with the highest overall total at 2.86W during sequential write activity. With the Samsung 840 Evo 500GB, we noted similar idle power at 0.30 watts, and during its sequential write activity it required 2.70W.

    Conclusion

    The Samsung 840 Evo delivers on the company's continued innovation in the entry-SSD space by implementing 19nm NAND lithography, RAPID mode and Turbo Write to drive performance, and Samsung Magician 4.2 (the latest version of the company's SSD management software). Along with the updated MEX controller now at 400MHz, this engineering all translates into a drive that has significantly higher quoted performance peaks, ships with a low price point and simultaneously hits the highest capacity mark available in the single-controller, consumer SSD space. 

    The performance delta Samsung quotes is achieved by implementing two features: Turbo Write which is always on and RAPID Mode which is optional. Turbo Write creates a simulated SLC buffer that ranges from 3GB on the 120GB model up to 12GB on the 1TB model. Data is first written to the buffer and then is transferred to the SSD when the host is idle. RAPID Mode utilizes the DRAM to accelerate transfers and can be activated easily from the Magician 4.2 software. Hot data is cached on the DRAM, creating much quicker access rates.

    We tested the drive natively, without switching on RAPID Mode, and with the 840 Evo's Turbo Write functionality, we predicted even greater performance than we found on the first-gen 840. That educated guess proved accurate as the 840 Evo often out-performed the 840 first-gen by large margins, and at the very least registered the same performance in every category in which we tested the SSDs. Particularly, the 840 Evo had the greatest advantage compared to the first-gen 840 when comparing their write activity performance where the Evo has been enhanced quite drastically. We also drew comparisons between the Samsung 840 Evo 1TB and the Crucial M500 960GB to discover which delivered the most robust performance within the 1TB-class. The 840 Evo 1TB really shined, especially in the consumer real-world tests where it offered triple the performance in the Productivity trace, double the performance in the HTPC scenario, and slightly greater performance than the M500 in the Gaming trace.  

    Pros

    • Overall strong write performance  
    • Performance in our consumer real-world benchmarks
    • Price-point with TLC NAND

    Cons

    • Questionable reliability compared to MLC NAND

    Bottom Line

    The Samsung 840 Evo entry-level SSD provides consumers with a very low $/GB option that still delivers more robust throughput across the board than almost all of the competition.

    Samsung SSD 840 EVO at Amazon.com

    Discuss This Review

    www.storagereview.com


    Смотрите также