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Differences What are the advantages of each

Front view of AMD A6 6400B

Reasons to consider the
AMD A6 6400B

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Higher clock speed 3.9 GHz vs 3.7 GHz More than 5% higher clock speed
Significantly higher Maximum operating temperature 74 °C vs 70 °C More than 5% higher Maximum operating temperature
Better overclocked clock speed (Water) 3.9 GHz vs 3.7 GHz More than 5% better overclocked clock speed (Water)
Front view of AMD A4 6300

Reasons to consider the
AMD A4 6300

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Much better overclocked clock speed (Air) 4.43 GHz vs 3.9 GHz Around 15% better overclocked clock speed (Air)

Benchmarks Real world tests of A6 6400B vs A4 6300

PassMark Data courtesy Passmark

A6 6400B
2,281
A4 6300
2,224

PassMark (Single Core)

A6 6400B
1,387
A4 6300
1,366

Specifications Full list of technical specs

summary

A6 6400B  vs
A4 6300 
Clock speed 3.9 GHz 3.7 GHz
Turbo clock speed 4.1 GHz 3.9 GHz
Cores Dual core Dual core
Is unlocked No 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 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 1.91 pt/W 6.46 pt/W
Typical power consumption 52.81W 52.81W

details

A6 6400B  vs
A4 6300 
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
L3 cache None None
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 74°C Unknown - 70°C

overclocking

Overclocked clock speed 3.9 GHz 4.43 GHz
Overclocked clock speed (Water) 3.9 GHz 3.7 GHz
Overclocked clock speed (Air) 3.9 GHz 4.43 GHz

integrated graphics

GPU GPU GPU
Label Radeon™ HD 8470D Radeon™ HD 8370D
Latest DirectX 11.0 11.0
GPU clock speed 800 MHz 760 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
AMD A6 6400B
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AMD A4 6300
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