AMD A6 6420K 

Released January, 2014
  • 4 GHz
  • Dual core
  • Unlocked
7 Out of 10

CPUBoss Review Our evaluation of the AMD A6 6420K among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores

A6 6420K
5.4
A6 6400K
5.9
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

A6 6420K
5.8
A6 6400K
6.5
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

A6 6420K
n.d.
A6 6400K
6.2
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

A6 6420K
n.d.
A6 6400K
7.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

A6 6420K
7.0
A6 6400K
7.5
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

A6 6420K
6.8
A6 6400K
8.1
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

7

CPUBoss Score

Combination of all six facets

A6 6420K
7.0
A6 6400K
7.8

Benchmarks Real world tests of the AMD A6 6420K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A6 6420K
3,501
Core i3 3220
5,399
A6 6400K
3,328

GeekBench 3 (Single core) Data courtesy Primate Labs

A6 6420K
2,245
Core i3 3220
2,501
A6 6400K
2,108

GeekBench 3 (AES single core) Data courtesy Primate Labs

A6 6420K
2,770 MB/s
A6 6400K
2,380,000 MB/s
Core i3 3220
173,000 MB/s

PassMark Data courtesy Passmark

A6 6420K
2,251
Core i3 3220
4,229
A6 6400K
2,291

PassMark (Single Core)

A6 6420K
1,428
Core i3 3220
1,764
A6 6400K
1,404

Specifications Full list of technical specs

summary

Clock speed 4 GHz
Turbo clock speed 4.2 GHz
Cores Dual core
Socket type FM2
Is unlocked Yes

features

Has a NX bit Yes
Supports trusted computing No
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

memory controller

Memory controller Built-in
Memory type DDR3
Channels Dual Channel
Supports ECC No
Maximum bandwidth 12,800 MB/s

details

Architecture x86-64
Threads 2 threads
L2 cache 1 MB
L2 cache per core 0.5 MB/core
Manufacture process 32 nm
Max CPUs 1
Operating temperature Unknown - 70°C

integrated graphics

GPU GPU
Label Radeon HD 8000 series

power consumption

TDP 65W
Annual home energy cost 15.66 $/year
Annual commercial energy cost 56.94 $/year
Performance per watt 1.61 pt/W
Typical power consumption 52.81W
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