CPUBoss Review Our evaluation of 7400K vs 6400K among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores

A6 7400K
6.2
A6 6400K
5.9
A8 7600
7.8
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

A6 7400K
5.9
A6 6400K
6.5
A8 7600
6.6
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

A6 7400K
7.3
A6 6400K
6.2
A8 7600
8.5
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

A6 7400K
8.0
A6 6400K
6.7
A8 7600
9.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

A6 7400K
7.8
A6 6400K
7.5
A8 7600
8.6
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

A6 7400K
8.7
A6 6400K
8.1
A8 7600
7.5
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

8.2

CPUBoss Score

Combination of all six facets

A6 7400K
8.2
A6 6400K
7.8
A8 7600
8.5

Winner
AMD A6 7400K 

CPUBoss recommends the AMD A6 7400K  based on its .

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Differences What are the advantages of each

Front view of AMD A6 7400K

Reasons to consider the
AMD A6 7400K

Report a correction

CPUBoss is not aware of any important advantages of the 7400K vs the 6400K.

Front view of AMD A6 6400K

Reasons to consider the
AMD A6 6400K

Report a correction

CPUBoss is not aware of any important advantages of the 6400K vs the 7400K.

Benchmarks Real world tests of A6 7400K vs 6400K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

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

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

A6 7400K
0.83 fps
A6 6400K
0.4 fps

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

A6 7400K
2,590
A6 6400K
2,364

Sky Diver Data courtesy FutureMark

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

Cloud Gate Data courtesy FutureMark

A6 7400K
3,420
A6 6400K
3,375

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A6 7400K
3,180
A6 6400K
3,328

GeekBench 3 (Single core) Data courtesy Primate Labs

A6 7400K
2,081
A6 6400K
2,108

GeekBench 3 (AES single core) Data courtesy Primate Labs

A6 7400K
1,910 MB/s
A6 6400K
2,380,000 MB/s

Specifications Full list of technical specs

summary

A6 7400K  vs
6400K 
Clock speed 3.5 GHz 3.9 GHz
Cores Dual core Dual core
Is unlocked Yes Yes

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
ABM
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866

details

A6 7400K  vs
6400K 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 28 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 70°C Unknown - 70°C

integrated graphics

GPU GPU GPU
Label Radeon R5 series Radeon™ HD 8470D

power consumption

TDP 65W 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 2.81 pt/W 7.24 pt/W
Typical power consumption 52.81W 52.81W
AMD A6 7400K
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AMD A6 6400K
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