AMD A6-6400K VS AMD FX-8320 — differences in specs

Comparison of video cards AMD A6-6400K vs AMD FX-8320 in benchmarks and specifications.

Differences Specifications Benchmarks

Differences

Top features of AMD FX-8320

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More number of cores

8 2

2 times more threads

Top features of AMD A6-6400K

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Higher clock speed

3.90 GHz 3.50 GHz

Around 10% better clock speed
Higher turbo clock speed

4.10 GHz 4.00 GHz

Around 2 % better overclocked clock speed
Performance per watt

65 W 125 W

About 0.52 times less performance per watt

Specifications

Complete list of technical specifications

AMD FX-8320 AMD A6-6400K

CPU generation and family

Let's find out which one of AMD FX-8320 and AMD A6-6400K is of a more recent generation, and what segment it belongs to.

Specification	Value
Name	AMD FX-8320 AMD A6-6400K
Segment	Desktop / Server Desktop / Server
Family	AMD FX AMD A
Generation	2 3
CPU group	AMD FX-8000 AMD A6-6000

CPU Cores and Base Frequency

In this block we are going to compare AMD FX-8320 vs AMD A6-6400K by main technical specifications: number of cores and threads, base and maximum frequencies, process technology and cache size. The higher these specifications are, the more powerful your CPU will be.

Specification	Value
Frequency	3.50 GHz 3.90 GHz
CPU Cores	8 2
Turbo (1 Core)	4.00 GHz 4.10 GHz
CPU Threads	8 2
Hyperthreading	No No
Overclocking	Yes Yes
Core architecture	normal normal

Internal Graphics

Common specifications for integrated graphics cards in AMD FX-8320 and AMD A6-6400K along with supported interfaces and connection options. This block has no effect on the final efficiency of the CPU.

Specification	Value
GPU name	no iGPU AMD Radeon HD 8470D
GPU frequency	0.80 GHz
GPU (Turbo)	No turbo No turbo
Execution units	3
Shader	192
Max. GPU Memory	-- 2 GB
Max. displays	2
Generation	5
DirectX Version	11.2
Technology	32 nm
Release date	Q2/2013

Hardware codec support

Let's compare the support of video codecs between AMD FX-8320 and AMD A6-6400K. Hardware support of video decoding by embedded graphics cards directly affects the speed and quality of rendering videos.

Specification	Value
h265 / HEVC (8 bit)	No No
h265 / HEVC (10 bit)	No No
h264	No Decode
VP9	No No
VP8	No No
AV1	No No
AVC	No Decode
VC-1	No Decode
JPEG	No Decode / Encode

Memory & PCIe

To choose the best model between AMD FX-8320 and AMD A6-6400K you need to pay special attention to memory type, clock frequency, multi-channel features, and PCIe version. The higher these numbers are, the better your CPU will be. Keep in mind that the maximum memory and frequency may also depend on the model of the motherboard.

Specification	Value
Memory type	DDR3-1866 DDR3-1866
ECC	Yes No
Memory channels	2 2

Encryption

AES-NI encryption support for CPUs AMD FX-8320 and AMD A6-6400K.

Specification	Value
AES-NI	Yes Yes

Thermal Management

Let's find out what TDP value would be better for AMD FX-8320 or AMD A6-6400K? The Thermal Design Power (TDP) indicates the maximum amount of heat that should be dissipated by the chip cooling system. However, the value of TDP gives only a rough indication of the real power consumption of the CPU.

Specification	Value
TDP (PL1)	125 W 65 W

Technical details

Here you can find a comparison of 2nd and 3rd level cache sizes for AMD FX-8320 and AMD A6-6400K CPUs along with a list of ISA extensions.

Specification	Value
Instruction set (ISA)	x86-64 (64 bit) x86-64 (64 bit)
Virtualization	AMD-V AMD-V
ISA extensions	SSE4.1, SSE4.2, AVX, FMA3, FMA4 SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4
L3-Cache	8.00 MB 1.00 MB
Architecture	Vishera (Bulldozer) Richland (Piledriver)
Technology	32 nm 32 nm
Socket	AM3+ FM2
Release date	Q4/2012 Q2/2013