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Differences What are the advantages of each

Front view of AMD A6 6400K

Reasons to consider the
AMD A6 6400K

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Much higher clock speed 3.9 GHz vs 2.5 GHz More than 55% higher clock speed
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better overclocked clock speed (Air) 4.76 GHz vs 2.5 GHz More than 90% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 5.16 GHz vs 2.5 GHz More than 2x better overclocked clock speed (Water)
Front view of AMD A10 6700T

Reasons to consider the
AMD A10 6700T

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Significantly lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Higher Maximum operating temperature 71.3 °C vs 70 °C Almost the same
Significantly lower annual home energy cost 10.84 $/year vs 15.66 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 39.42 $/year vs 56.94 $/year More than 30% lower annual commercial energy cost

Benchmarks Real world tests of A6 6400K vs A10 6700T

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

A6 6400K
34.13 mHash/s
A10 6700T
59.56 mHash/s

CompuBench 1.5 (Face detection)

A6 6400K
3.83 mPixels/s
A10 6700T
4.79 mPixels/s

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

A6 6400K
163.54 fps
A10 6700T
230.34 fps

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

A6 6400K
0.4 fps
A10 6700T
0.6 fps

CompuBench 1.5 (Video composition) Data courtesy CompuBench

A6 6400K
9.95 fps
A10 6700T
15.08 fps

PassMark Data courtesy Passmark

A6 6400K
2,291
A10 6700T
3,702

PassMark (Single Core)

A6 6400K
1,404
A10 6700T
1,193

Specifications Full list of technical specs

summary

A6 6400K  vs
A10 6700T 
Clock speed 3.9 GHz 2.5 GHz
Turbo clock speed 4.1 GHz 3.5 GHz
Cores Dual core Quad core
Is unlocked Yes No

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

power consumption

TDP 65W 45W
Annual home energy cost 15.66 $/year 10.84 $/year
Annual commercial energy cost 56.94 $/year 39.42 $/year
Performance per watt 7.25 pt/W 4.98 pt/W
Typical power consumption 52.81W 36.56W

details

A6 6400K  vs
A10 6700T 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 1 MB 4 MB
L2 cache per core 0.5 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 70°C Unknown - 71.3°C

overclocking

Overclocked clock speed 4.76 GHz 2.5 GHz
Overclocked clock speed (Water) 5.16 GHz 2.5 GHz
Overclocked clock speed (Air) 4.76 GHz 2.5 GHz

integrated graphics

GPU GPU GPU
Label Radeon™ HD 8470D Radeon HD 8650D
Latest DirectX 11.0 11.0
GPU clock speed 800 MHz 720 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3
AMD A6 6400K
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AMD A10 6700T
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