AMD A6 6400K 

Released June, 2013
  • 3.9 GHz
  • Dual core
  • Unlocked
7.5 Out of 10

CPUBoss Review Our evaluation of the AMD A6 6400K among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores

A6 6400K
6.1
A6 7400K
6.4
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

A6 6400K
7.2
A6 7400K
6.5
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

A6 6400K
6.2
A6 7400K
7.3
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

A6 6400K
6.9
A6 7400K
8.1
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

A6 6400K
7.1
A6 7400K
7.3
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

A6 6400K
n.d.
A6 7400K
n.d.
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

7.5

CPUBoss Score

Combination of all six facets

A6 6400K
7.5
A6 7400K
7.8

Benchmarks Real world tests of the AMD A6 6400K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

A6 6400K
34.13 mHash/s
A6 7400K
46.97 mHash/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

A6 6400K
0.4 fps
A6 7400K
0.83 fps

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

A6 6400K
2,364
A6 7400K
2,590
Core i3 3220
2,251

Sky Diver Data courtesy FutureMark

A6 6400K
2,157
A6 7400K
3,153

Cloud Gate Data courtesy FutureMark

A6 6400K
3,375
Core i3 3220
2,654
A6 7400K
3,420

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A6 6400K
3,328
Core i3 3220
5,399
A6 7400K
3,183

GeekBench 3 (Single core) Data courtesy Primate Labs

A6 6400K
2,108
Core i3 3220
2,501
A6 7400K
1,969

GeekBench 3 (AES single core) Data courtesy Primate Labs

A6 6400K
2,380,000 MB/s
A6 7400K
2,070 MB/s
Core i3 3220
173,000 MB/s

Specifications Full list of technical specs

summary

Clock speed 3.9 GHz
Turbo clock speed 4.1 GHz
Cores Dual core
Is unlocked Yes

features

Has a NX bit Yes
Has virtualization support Yes
Instruction set extensions
  1. ABM
  2. AES
  3. AMD-V
  4. AMD64
  5. AVX
  6. AVX 1.1
  7. BMI1
  8. CVT16
  9. F16C
  10. FMA3
  11. FMA4
  12. MMX
  13. SSE
  14. SSE2
  15. SSE3
  16. SSE4.1
  17. SSE4.2
  18. SSE4a
  19. Supplemental SSE3
  20. TBM
  21. XOP
Supports dynamic frequency scaling Yes

power consumption

TDP 65W
Annual home energy cost 15.66 $/year
Annual commercial energy cost 56.94 $/year
Performance per watt 7.68 pt/W
Typical power consumption 52.81W

details

Architecture x86-64
Threads 2 threads
L2 cache 1 MB
L2 cache per core 0.5 MB/core
L3 cache None
Manufacture process 32 nm
Max CPUs 1
Operating temperature Unknown - 70°C

overclocking

Overclocked clock speed 4.79 GHz
Overclocked clock speed (Water) 5.14 GHz
Overclocked clock speed (Air) 4.79 GHz

integrated graphics

GPU GPU
Label Radeon™ HD 8470D
Latest DirectX 11.0
GPU clock speed 800 MHz

memory controller

Memory controller Built-in
Memory type DDR3-1866
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