AMD A8-3870K vs AMD FX-9370

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CPU comparison with benchmarks


AMD A8-3870K CPU1 vs CPU2 AMD FX-9370
AMD A8-3870K AMD FX-9370

CPU comparison

AMD A8-3870K or AMD FX-9370 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The AMD A8-3870K has 4 cores with 4 threads and clocks with a maximum frequency of 3.10 GHz. Up to GB of memory is supported in 2 memory channels. The AMD A8-3870K was released in Q4/2011.

The AMD FX-9370 has 8 cores with 8 threads and clocks with a maximum frequency of 4.70 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD FX-9370 was released in Q3/2013.
AMD A (112) Family AMD FX (30)
AMD A8-3000 (4) CPU group AMD FX-9000 (2)
1 Generation 2
Llano (K10) Architecture Vishera (Piledriver)
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD A8-3870K has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD A8-3870K is 3.10 GHz while the AMD FX-9370 has 8 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the AMD FX-9370 is at 4.40 GHz (4.70 GHz).

AMD A8-3870K Characteristic AMD FX-9370
4 Cores 8
4 Threads 8
normal Core architecture normal
No Hyperthreading No
Yes Overclocking ? Yes
3.10 GHz Frequency 4.40 GHz
-- Turbo Frequency (1 Core) 4.70 GHz
-- Turbo Frequency (All Cores) 4.70 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

AMD A8-3870K Characteristic AMD FX-9370
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD A8-3870K or AMD FX-9370 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

AMD Radeon HD 6550D GPU no iGPU
0.60 GHz GPU frequency --
-- GPU (Turbo) --
3 GPU Generation --
32 nm Technology
2 Max. displays
5 Compute units --
400 Shader --
No Hardware Raytracing No
No Frame Generation No
1 GB Max. GPU Memory --
11 DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

AMD Radeon HD 6550D GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
Decode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The AMD A8-3870K can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 25.6 GB/s. The AMD FX-9370 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 29.9 GB/s.

AMD A8-3870K Characteristic AMD FX-9370
DDR3-1600 Memory DDR3-1866
Max. Memory
2 (Dual Channel) Memory channels 2 (Dual Channel)
25.6 GB/s Max. Bandwidth 29.9 GB/s
No ECC Yes
-- L2 Cache --
4.00 MB L3 Cache 8.00 MB
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the AMD A8-3870K is 100 W, while the AMD FX-9370 has a TDP of 220 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD A8-3870K Characteristic AMD FX-9370
100 W TDP (PL1 / PBP) 220 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD A8-3870K is manufactured in 32 nm and has 4.00 MB cache. The AMD FX-9370 is manufactured in 32 nm and has a 8.00 MB cache.

AMD A8-3870K Characteristic AMD FX-9370
32 nm Technology 32 nm
Unknown Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE3, SSE4a ISA extensions SSE4.1, SSE4.2, AVX, FMA3, FMA4
FM1 Socket AM3+
AMD-V Virtualization AMD-V
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q4/2011 Release date Q3/2013
80 $ Release price 195 $
show more data show more data


Rate these processors

Here you can rate the AMD A8-3870K to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
Here you can rate the AMD FX-9370 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 0 CPU benchmarks
AMD A8-3870K (0%)
AMD FX-9370 (0%)
⌀ Multi core performance in 2 CPU benchmarks
AMD A8-3870K (41%)
AMD FX-9370 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
3684 (38%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
9652 (100%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
302 (43%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
699 (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
0 (0%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
613 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
0 (0%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
3040 (100%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
176 (100%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
666 (100%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
0 (0%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
AMD A8-3870K AMD A8-3870K
AMD Radeon HD 6550D @ 0.60 GHz
480 (100%)
AMD FX-9370 AMD FX-9370
@ 0.00 GHz
0 (0%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
0 (0%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
787.9 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
0 (0%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.40 GHz
1528 (100%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD A8-3870K AMD A8-3870K
4C 4T @ 3.10 GHz
77 (100%)
AMD FX-9370 AMD FX-9370
8C 8T @ 4.70 GHz
0 (0%)

Devices using this processor

AMD A8-3870K AMD FX-9370
Unknown Unknown

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