Amd athlon x4 845


AMD Athlon X4 845

AMD Athlon X4 845 - 4-ядерный процессор с тактовой частотой 3500 MHz и кэшем 2-го уровня 2048 KB. Процессор предназначен для настольных компьютеров, разъем - Socket FM2+. Имеет встроенный контроллер оперативной памяти (2 канала, DDR3) и контроллер PCI Express 3.0 (количество линий - 8).

Основная информация:
Год выхода2016
Сегментдля настольных компьютеров
SocketSocket FM2+
Количество ядер4
Количество потоков4
Базовая частота3500 MHz
Turbo Core3800 MHz
Разблокированный множительнет
Архитектура (ядро) Carrizo
Техпроцесс28 nm
Транзисторов, млн3100
TDP65 W
Макс. температура90° C
Официальные спецификацииперейти >
Внутренняя память
Кэш L1, КБ4x32+2x96
Кэш L2, КБ2048
Кэш L3, КБнет
Встроенные модули
Графический процессорнет
Контроллер оперативной памяти2-канальный(DDR3)
Контроллер PCIePCI Express 3.0 (8 линий)
Другие модули / периферия • I2C controller• Secure processor• TrueAudio accelerator• UART• Унифицированный видеодекодер (UVD)• Модуль кодирования видео (VCE)
Инструкции, технологии
• MMX• SSE• SSE2• SSE3• SSE4A• SSSE3• SSE4 (SSE4.1 + SSE4.2)• AES (Advanced Encryption Standard)• AVX (Advanced Vector Extensions)• AVX 2 (Advanced Vector Extensions)• BMI1 (Bit Manipulation inst. 1)• F16C (16-bit Floating-Point conversion)• FMA3 (3-operand Fused Multiply-Add)• FMA4 (4-operand Fused Multiply-Add)• TBM (Trailing Bit Manipulation)• XOP (eXtended Operations)• AMD64• EVP (Enhanced Virus Protection)• AMD-V (AMD Virtualization)• Turbo Core 3.0• PowerNow!

Сравнить Athlon X4 845 с другим процессором

( ~ 2 600 моделей )

Рейтинг процессоров

( + спецификации )

Сервис сравнения видеокарт

( ~ 600 моделей )

Рейтинг видеокарт

( + спецификации )

www.chaynikam.info

Тест процессора AMD Athlon X4 845 | CHIP

Процессор AMD Athlon X4 845 не показал в нашем тесте выдающихся результатов. Правда, данный CPU можно приобрести по невысокой цене, но соотношение цена/качество у данной модели все равно не самое лучшее в нашем сводном рейтинге.

Итоги теста

Привлекательная цена Четыре ядра

Производительность Нет интегрированной графики

Результаты тестирования AMD Athlon X4 845

  • Соотношение цена/качество Среднее
  • Место в общем рейтинге 80 из 176
  • Соотношение цена/качество: 47
  • Производительность CPU (100%): 30.1

По результатам теста назвать процессор AMD Athlon X4 845 хорошим мы можем лишь весьма условно. Во время нашей проверки данная модель не продемонстрировала выдающихся результатов ни в одной из категорий. А оценка за параметр «Производительность CPU» казалась довольно низкой.

Кроме того, на момент публикации данного отчета AMD Athlon X4 845 не самый грамотный выбор для рабочего ПК — это показывает низкий уровень соотношения цены и качества. И это даже несмотря на достаточно невысокую стоимость процессора.

Результаты тестирования AMD Athlon X4 845

Альтернатива: CPU с лучшим соотношением цены и качества

Процессоры. Все результаты тестов

Процессоры. Все результаты тестов

Соотношение цена/качество 47
Производительность GPU 0
Архитектура Carrizo
Исполнение (форм-фактор) FM2+
Кол-во ядер 4
Кол-во потоков 4
Номинальная частота 3,5 ГГц
Максимальная частота 3,8 ГГц
Техпроцесс 28 нм;
Объем L2-кеш 2x 1024 Кбайт
Объем L3-кеш -
Термопакет (TDP) 65 Вт
Тест CPU: PCMark 8 2.327 бал.
Тест CPU: Excel 2010 SP1 - моделир. Монте-Карло
Тест CPU: Cinebench R15 (макс. ядер CPU) 310 бал.
Тест CPU: WinRAR 4.01 (64 бит)
Тест: TrueCrypt 7.1 AES-Twofish-Serpent
Тест CPU: HandBrake 0.9.5 26,8 fps
Тест CPU: PovRay 3.7 RC3 (1280x1024 без AA) 937 пикс/с
Видеоядро -
Тест GPU: 3DMark Cloud Gate -
Тест GPU: 3DMark Firestrike -
Тест GPU: Metro Last Light -
Тест GPU: Bioshock Infinite -

Sergey Suslov

  • ТЕГИ
  • AMD Athlon X4 845
  • cpu
  • процессоры AMD
  • четырехъядерные процессоры

КОММЕНТАРИИ

ichip.ru

AMD Athlon X4 845

AMD Athlon X4 845 - 4-core processor with a clock frequency of 3500 MHz and 2rd level cache 2048 KB. Processor is designed for desktop computers, installs in a Socket FM2+. Has a built-in memory controller (2 channels, DDR3) and controller PCI Express 3.0 (8 lines).

Essentials:
Released2016
Segmentfor desktop computers
SocketSocket FM2+
Number of cores4
Number of threads4
Base frequency3500 MHz
Turbo Core3800 MHz
Unlocked multiplierno
Architecture (core)Carrizo
Lithography28 nm
Transistors, mn3100
TDP65 W
Max. temperature90° C
Official specificationsfollow >
Internal memory
L1 Cache, Кb4x32+2x96
L2 Cache, Кb2048
L3 Cache, Кbno
Integrated moduls
Graphics processorno
Memory controller2-channel(DDR3)
PCIe controllerPCI Express 3.0 (8 lines)
Other modules / peripherals • I2C controller• Secure processor• TrueAudio accelerator• UART• Unified Video Decoder (UVD)• Video Coding Engine (VCE)
Instructions, technology
• MMX• SSE• SSE2• SSE3• SSE4A• SSSE3• SSE4 (SSE4.1 + SSE4.2)• AES (Advanced Encryption Standard)• AVX (Advanced Vector Extensions)• AVX 2 (Advanced Vector Extensions)• BMI1 (Bit Manipulation inst. 1)• F16C (16-bit Floating-Point conversion)• FMA3 (3-operand Fused Multiply-Add)• FMA4 (4-operand Fused Multiply-Add)• TBM (Trailing Bit Manipulation)• XOP (eXtended Operations)• AMD64• EVP (Enhanced Virus Protection)• AMD-V (AMD Virtualization)• Turbo Core 3.0• PowerNow!

Compare Athlon X4 845 with a different processor

( ~ 2 600 models )

Processors rating

( + specifications )

Graphics card comparison

( ~ 600 models )

Graphics card rating

( + specifications )

www.chaynikam.info

AMD Carrizo Part 2: A Generational Deep Dive into the Athlon X4 845 at $70

Unlike the other Athlon CPUs used as the main comparison points in this test, the X4 845 is not overtly designed for overclocking. It lacks the extra ‘K’ in its name, meaning that the CPU has a maximum limited multiplier, and the only way to adjust the frequency above the rated box speed is by adjusting the base frequency (100 MHz at default). We’ve detailed base frequency overclocking in a number of pieces in the past, both on AMD and Intel (such as the recent i3 overclocking debate), and there are a number of issues to consider.

Depending on the design of the platform, adjusting the base frequency has a knock on affect with a number of sub-systems. Typically speaking, adjusting the base frequency automatically adjusts the DRAM speeds as well, which would need to have its multiplier reduced to stay at its intended data rate. Adjusting the base frequency can also affect the chipset or PCIe lanes, pushing them out of specifications and leading to transmission errors due to the signal-to-noise ratio becoming worse, leading to corrupt data. Beyond this, as increasing the base frequency has these knock on effects, in some instances the voltage of these other components needs to be increased to compensate. It becomes a juggling act between frequency, voltage, temperature and stability very quickly. Despite this, some platforms can do it very well by implementing separate clock speed generators and compensation mechanisms, while others not so much – it depends on the design. Then there is the added factor of how close the processor is to the limit of overclocking to begin with.

At the top of this article we discussed the design for the Athlon X4 845. At its heart, using the Excavator microarchitecture and Carrizo cores, this is a processor that was originally designed for a laptop but placed into a desktop processor’s clothing. The design target for the family of processors was 15W total, and when you design a CPU to a certain power budget, there are compromises/techniques that can be done to make it more efficient at the target power rating. As you move away from that rating, either by frequency or voltage, the efficiency decreases. If you decrease it too much, you may find that at a given frequency, the performance or efficiency of the processor can be bested by an older generation part with a higher target power window – in this case, AMD’s slides suggested that a 35W Kaveri and a 35W Carrizo part would have similar efficiency characteristics. The Athlon X4 845 is a 65W processor, blowing past the 35W match up, but is only a couple of hundred MHz behind the X4 880K to begin with.

Being designed for 15W and running at 65W would typically be a problem – being so far outside the standard design window most likely means that the CPU is near the physical limit of what is possible for headroom and, depending on the voltage/frequency curve of the processor, could result in it being very warm. Nonetheless, we took a sledgehammer to crack an egg with our standard overclocking tests.

Methodology

Our standard overclocking methodology is as follows. For manual overclocks, based on the information gathered from previous testing, starts off at a nominal voltage and CPU frequency, and the base frequency is increased in steps of 5 MHz until the stability tests are failed. The CPU voltage is increased gradually until the stability tests are passed, and the process repeated until the motherboard reduces the multiplier automatically (due to safety protocol) or the CPU temperature reaches a stupidly high level (100ºC+). Our test bed is not in a case, which should push overclocks higher with fresher (cooler) air.

The testing software implements a single POV-Ray benchmark run, which typically catches memory errors or extreme CPU errors, and a five-minute blast of OCCT, which alternates between heavy and AVX loading. This should catch mathematical errors caused by low voltages.

Overclock Results

>>Insert Failure Here

www.anandtech.com

AMD Carrizo Based Athlon X4 845 and Athlon X4 835 Desktop CPUs Leaked - Feature 28nm Excavator Cores

It seems like AMD is getting ready for multiple launches in 2016, not only on new platforms but also for existing platforms. You may have heard of Carrizo which serves AMD as their flagship mobility processor lineup, but you might be surprised to know that Carrizo might soon be coming to the FM2+ desktop platform in the form of the latest Athlon chips.

AMD Carrizo Based Athlon Chips Leaked, Coming Soon To FM2+ Desktop Platform

Carrizo has been serving the mobility sector for a while and AMD launched their Kaveri refresh platform for the desktop platform called Godavari. Godavari might have brought nothing new to the desktop market but AMD’s upcoming Athlon chips will act a small refresh on the budget FM2+ platform. While AMD is expected to launch their Carrizo APUs for desktops under the Bristol Ridge family that will be supported by the new AM4 boards, the Athlon chips are getting a quick update on the existing FM2+ motherboards and Gigabyte has leaked two Athlon processors in their CPU support list for such motherboards which are using the latest Excavator 28nm core architecture, an updated version of the steamroller architecture featured on Kaveri processors.

The two processors known as Athlon X4 845 and Athlon X4 835 are 28nm Excavator brand and fall under the Carrizo family of processors. Carrizo has several CPU and APU models on the mobility platforms but these chips will be the first models that will be geared towards the desktop platform. Being branded as Athlon chips, their iGPU has been excluded but in return, we get cheaper built processors that perform just as good as most of the modern chips available.

The AMD Athlon X4 845 and Athlon X4 835 processors are both quad core chips which feature 4 MB of L2 cache and 65W TDPs. We don’t know the exact clock speeds of these chips but based on Carrizo will give them a good boost over their Kaveri based counterparts and the updated 28nm process assures better efficiency. We aren’t sure if these will be the only Carrizo chips available on FM2+ platforms or there will be more but Gigabyte has already started seeding their latest BIOS for FM2+ motherboards which adds support for Carrizo processors as seen on their official website. The BIOS update was released last week so it’s a fresh release and from the looks of it, the processors themselves couldn’t be much far away.

There’s no actual launch date or pricing given but given that these are entry level Athlon chips, we are looking at a sub-$90 US pricing for both these chips or even lower. There is a slight possibility that both chips will be sold exclusively in the Chinese markets as AMD has several APAC targeted products in the line. Even their X4 870K Godavari processor was sold exclusively in the Chinese and Japanese markets so people living in US and EU might be out of luck.

AMD Carrizo Athlon Processors Specifications:

Processor NameAMD Athlon X4 835AMD Athlon X4 840AMD Athlon X4 845AMD Athlon X4 850AMD Athlon X4 860KAMD Athlon X4 870K
CPU Process Node28nm28nm28nm28nm28nm28nm
CPU CodenameCarrizoKaveriCarrizoGodavariKaveriGodavari
CPU Architecture28nm Excavator28nm Steamroller28nm Excavator28nm Steamroller28nm Steamroller28nm Steamroller
Cores / Threads4/44/44/44/44/44/4
Core Clock (GHz)TBD3.1 GHzTBD3.2 GHz3.7 GHz3.9 GHz
Boost Clock (GHz)TBD3.8 GHzTBD3.9 GHz4.0 GHz4.1 GHz
L2 Cache4 MB4 MB4 MB4 MB4 MB4 MB
Socket SupportFM2+FM2+FM2+FM2+FM2+FM2+
TDP65W65W65W65W95W95W

wccftech.com

AMD Athlon X4 845 Review: Excavator digs AMD out from under Intel

AMD Athlon X4 845

There was a time (back in the days of overheating Pentium 4 processors) when the PC industry believed that AMD and its family of high-performance, high-value processors would replace Intel as principal manufacturer of CPUs. More than a decade later AMD has been largely eclipsed by the market successes of Intel and several generations of its Core-series processors. But while Intel has focused on pushing for faster clock speeds and delivering lower power consumption by moving to a 14nm architecture, AMD has quietly been optimizing its 28nm architecture to deliver similar power efficiency and greater performance per watt in the entry-level and “mainstream” PC market.

This is where AMD’s Athlon x4 845 and the new “Excavator” architecture made the equivalent of a stealth bomber attack against Intel earlier this year. The new Excavator cores won’t compete with the newest high-end Intel Core i7 chips, but AMD might have just found a way to bury Intel’s budget-priced Pentium line.

A closer look at the Athlon X4 845

Unlike the other CPUs (technically APUs) in the early 2016 line of AMD FM2+ desktop processors which are based around the older “Steamroller” cores combined with discrete GPU cores, the Athlon X4 845 features four separate 28nm Excavator processing cores (grouped in two nodes) and no graphics cores. The main features of the Excavator core are larger L1 data cache with lower latency and improved prefetch as well as better branch prediction with a 50% increase in the Branch Target Buffer size.

That technobabbel in the previous paragraph means Excavator delivers slightly more efficient (faster) processing than AMD’s Steamroller cores in the previous Kaveri platform. Unfortunately, the larger L1 cache and better prefetch in the Excavator cores is at least partially offset by the fact that Excavator runs on half as much L2 cache as the previous generation of AMD processors.  As a result the biggest practical improvement that the Excavator architecture brings to the table is better performance per watt rather than better overall performance. Each node (two of the four cores) in an Excavator-based CPU is 23 percent smaller than the same 28nm node in a Steamroller-based CPU. This explains how the new X4 845 has a TDP of just 65W yet still performs marginally better than a 95W CPU from the previous generation.

The team at Notebook Review wanted to take a closer look at this desktop processor because it gives us an unobstructed view of the processing power of AMD’s Carrizo platform and the Excavator cores found in the newest AMD-based notebooks for 2016.

AMD provided us with a review sample of the Athlon X4 845 along with the ASRock A88M-G/3.1 Micro ATX motherboard for our tests. The street price of the processor (with the included cooler) and the motherboard comes to just under $130 at the time of this writing; meaning this CPU and motherboard combination are aimed squarely at system builders who want an affordable PC with enough room for high-performance upgrades like support for PCI Express 3.0 x16 graphics cards and M.2 PCIe Gen2 x4 SSDs.

If there is a potential shortcoming to this desktop package it’s the lack of support for DDR4 system RAM.

AMD Athlon X4 845 Specifications:

  • Cores/Threads: 4/4
  • CPU Platform: Carrizo
  • CPU Architecture: 28nm Excavator
  • Core Clock: 3.5 GHz
  • Boost Clock: 3.8 GHz
  • L2 Cache: 2 MB
  • CPU Socket: FM2+
  • DRAM Frequency: 2133
  • TDP: 65W
  • Heat Sink: 95W Cool ‘n’ Quiet Thermal Solution
  • MSRP: $60

Test Setup:

  • AMD includes a 95W Cool ‘n’ Quiet Thermal Solution inside the box with the Athlon X4 845

    CPU: AMD Athlon X4 845
  • Motherboard: ASRock A88M-G/3.1
  • RAM: 2x 4GB G.SKILL Ripjaws X Series DDR3 2400 (PC3 19200)
  • GPU: Nvidia GeForce GTX 980
  • Storage: Kingston HyperX Savage 480GB SSD (SHSS37A/480G)
  • PSU: Antec TruePower Classic series TP-750C 750W
  • Heatsink: AMD stock cooler
  • Thermal Compound: Arctic Silver 5
  • OS: Windows 7 Professional 64-bit

Performance

The Athlon X4 845 is noticeably quicker launching and switching between apps and performing computational tasks than the previous generation (Kaveri) AMD Athlon X4 860K or the AMD A10-7850K. That said, the real-world difference in speed would largely go unnoticed by most consumers unless they did a side-by-side comparison between all three processors.

Comparing the X4 845 to Intel’s current Skylake-based Pentium G4400 produces mixed results. The dual-core Intel CPU delivers better single-core performance in basic processing tasks that only require one core but the quad-core Athlon consistently completes tasks that require multi-core processing in close to half the time.

The one performance area where we did observe a clear improvement in overall speed compared to both previous-generation AMD processors and current generation Intel Pentium CPUs was when editing and rendering 1080p and 4K video files; the X4 845 was obviously faster.

Benchmarks

Wprime 32M results in seconds (lower is better):

Cinebench R15 Single Core Score (higher is better):

Cinebench R15 Multi Core Score (higher is better):

Geekbench 3 Single Core Score (higher is better):

Geekbench 3 Multi Core Score (higher is better):

PCMark 8 Home Score (higher is better):

PCMark 8 Work Score (higher is better):

Power Consumption

While most desktop PC builders aren’t too concerned about the power consumption of their CPU there are others who believe that every watt matters. To that end, AMD didn’t just focus on minimizing the power consumption of the Excavator architecture while the cores are idle and under load. AMD engineers also made sure each core drops into idle mode as soon as it isn’t needed … and each core pops back into full voltage for intense processing quicker than previous generation CPUs.

As a result, the 65W Athlon X4 845 and its four 28nm Excavator cores consumes slightly less power in one hour than a similarly configured desktop with Intel’s dual-core 65W Pentium G4400 based on 14nm Skylake architecture. Our test configuration of the AMD Athlon X4 845 consumed just over 57W during idle while the desktop running the Intel Pentium G4400 consumed 62W at idle. When we pushed both CPUs to full load running Call of Duty: Black Ops III and the desktop with the X4 845 consumed 285W under load while the Pentium G4400 topped out at just under 268W.

In short, Intel 14nm process still has a slight advantage in total power consumption if you are constantly pushing your CPU to its limits, but AMD has clearly optimized the 28nm Excavator architecture to deliver similar (or lower) total power consumption during normal use as the CPU switches between idle and full power.  This type of power management is even more important for notebooks running AMD Carrizo APUs based on the Excavator architecture this year.

Conclusion

At the end of the day the AMD X4 845 wasn’t designed for people who spare no expense for the fastest technology that money can buy. Rather, the X4 845 is a budget quad-core CPU for desktop builders who expect even a value-priced desktop to “keep pace” with modern technology. We can’t say that AMD is back in a dominant position against Intel overall, but the Athlon X4 845 is better than Intel’s current line of budget-priced Pentium CPUs and rivals previous generation Core i3 and Core i5 chips. Competition is a good thing for consumers and the Excavator architecture delivers several improvements over the older Steamroller architecture.

If you want to build a low-cost gaming rig and need a processor that costs less than $70 the quad-core Athlon X4 845 is far more appealing than the dual-core Intel Pentium G4440 or the older Pentium G3258. In short, AMD’s new Excavator architecture arguably delivers “the best bang for your buck” at entry level prices.

Pros:

  • Solid multi-core performance
  • Very quiet stock cooler
  • Terrific value at current street prices
  • Low power consumption

Cons:

  • Slow single-thread performance
  • No integrated GPU
  • Not unlocked
  • Supports 2133MHz DDR3 but not DDR4

www.notebookreview.com


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