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Differences What are the advantages of each

Front view of AMD Athlon X4 750

Reasons to consider the
AMD Athlon X4 750

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Much lower typical power consumption 52.81W vs 81.25W 35% lower typical power consumption
Much lower annual home energy cost 15.66 $/year vs 24.09 $/year 35% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 87.6 $/year 35% lower annual commercial energy cost
Front view of AMD A8 6600K

Reasons to consider the
AMD A8 6600K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better overclocked clock speed (Air) 4.65 GHz vs 0.88 GHz More than 5.2x better overclocked clock speed (Air)
Significantly higher clock speed 3.9 GHz vs 3.4 GHz Around 15% higher clock speed
Much better overclocked clock speed (Water) 4.63 GHz vs 0.75 GHz Around 6.2x better overclocked clock speed (Water)
Higher Maximum operating temperature 74 °C vs 71.3 °C Around 5% higher Maximum operating temperature

Benchmarks Real world tests of Athlon X4 750 vs A8 6600K

PassMark Data courtesy Passmark

A8 6600K
4,574

PassMark (Single Core)

A8 6600K
1,460

Specifications Full list of technical specs

summary

Athlon X4 750  vs
A8 6600K 
Clock speed 3.4 GHz 3.9 GHz
Turbo clock speed 4 GHz 4.2 GHz
Cores Quad core Quad core
Is unlocked No Yes

features

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

memory controller

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

details

Athlon X4 750  vs
A8 6600K 
L2 cache 4 MB 4 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 0 MB None
Manufacture process 32 nm 32 nm
Operating temperature Unknown - 71.3°C Unknown - 74°C

overclocking

Overclocked clock speed 0.88 GHz 4.65 GHz
Overclocked clock speed (Water) 0.75 GHz 4.63 GHz
Overclocked clock speed (Air) 0.88 GHz 4.65 GHz

power consumption

TDP 65W 100W
Annual home energy cost 15.66 $/year 24.09 $/year
Annual commercial energy cost 56.94 $/year 87.6 $/year
Performance per watt 2.69 pt/W 5.07 pt/W
Typical power consumption 52.81W 81.25W
AMD Athlon X4 750
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AMD A8 6600K
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