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Differences What are the advantages of each

Front view of AMD PRO A A6 A6 PRO-7400B

Reasons to consider the
AMD PRO A A6 A6 PRO-7400B

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Newer manufacturing process 28 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Front view of AMD PRO A A4 A4 PRO-7300B

Reasons to consider the
AMD PRO A A4 A4 PRO-7300B

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Higher clock speed 3.8 GHz vs 3.5 GHz Around 10% higher clock speed
Much better overclocked clock speed (Air) 3.8 GHz vs 3.5 GHz Around 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 3.8 GHz vs 3.5 GHz Around 10% better overclocked clock speed (Water)

Benchmarks Real world tests of PRO A A6 A6 PRO-7400B vs A4 A4 PRO-7300B

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

PRO A A6 A6 PRO-7400B  vs
A4 A4 PRO-7300B 
Clock speed 3.5 GHz 3.8 GHz
Turbo clock speed 3.9 GHz 4 GHz
Cores Dual core Dual core
Is unlocked No No

features

Has virtualization support Yes Yes
Instruction set extensions
FMA4
AVX
AES

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 3.59 pt/W 1.98 pt/W
Typical power consumption 52.81W 52.81W

details

PRO A A6 A6 PRO-7400B  vs
A4 A4 PRO-7300B 
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 28 nm 32 nm
Operating temperature Unknown - 70°C Unknown - 70°C

overclocking

Overclocked clock speed 3.5 GHz 3.8 GHz
Overclocked clock speed (Water) 3.5 GHz 3.8 GHz
Overclocked clock speed (Air) 3.5 GHz 3.8 GHz

integrated graphics

GPU GPU GPU
Label Radeon™ R5 Radeon™ HD 8470D
Latest DirectX 12.0 11.0
GPU clock speed 756 MHz 800 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
AMD PRO A A6 A6 PRO-7400B
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AMD PRO A A4 A4 PRO-7300B
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