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Differences What are the advantages of each

Front view of AMD Athlon X4 750k

Reasons to consider the
AMD Athlon X4 750k

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Much higher clock speed 3.4 GHz vs 0.85 GHz 4x higher clock speed
More cores 4 vs 1 3 more cores; run more applications at once
More threads 4 vs 1 3 more threads
Much better overclocked clock speed (Air) 4.54 GHz vs 1.02 GHz Around 4.5x better overclocked clock speed (Air)
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Much better overclocked clock speed (Water) 5.01 GHz vs 0.85 GHz Around 6x better overclocked clock speed (Water)
Front view of AMD Athlon 850

Reasons to consider the
AMD Athlon 850

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CPUBoss is not aware of any important advantages of the Athlon 850 vs the Athlon X4 750k.

Features Key features of the Athlon X4 750k  vs 850 

clock speed

Athlon X4 750k
3.4 GHz
Athlon 850
0.85 GHz

L2 cache

overclocked clock speed (air)

Athlon X4 750k
4.54 GHz
Athlon 850
1.02 GHz

overclocked clock speed (water)

Athlon X4 750k
5.01 GHz
Athlon 850
0.85 GHz

Specifications Full list of technical specs

summary

Athlon X4 750k  vs
850 
Clock speed 3.4 GHz 0.85 GHz
Cores Quad core Single core

features

Has a NX bit Yes No
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
SSE4.2
CVT16
AMD-V
3DNow!
AES

details

Athlon X4 750k  vs
850 
Threads 4 1
L2 cache 4 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 32 nm 180 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.54 GHz 1.02 GHz
Overclocked clock speed (Water) 5.01 GHz 0.85 GHz
PassMark (Overclocked) 2,303.5 212.8
Overclocked clock speed (Air) 4.54 GHz 1.02 GHz

power consumption

Typical power consumption 81.25W N/A
AMD Athlon X4 750k
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AMD Athlon 850
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