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Differences What are the advantages of each

Front view of Intel Core i5 4670K

Reasons to consider the
Intel Core i5 4670K

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Much newer manufacturing process 22 nm vs 180 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 3.4 GHz vs 0.85 GHz 4x higher clock speed
Much more l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better overclocked clock speed (Air) 4.48 GHz vs 0.89 GHz More than 5x better overclocked clock speed (Air)
More cores 4 vs 1 3 more cores; run more applications at once
More threads 4 vs 1 3 more threads
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Much better overclocked clock speed (Water) 4.55 GHz vs 0.85 GHz More than 5.2x better overclocked clock speed (Water)
Front view of AMD Athlon 850

Reasons to consider the
AMD Athlon 850

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Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core

Features Key features of the Core i5 4670K  vs Athlon 850 

clock speed

Core i5 4670K
3.4 GHz
Athlon 850
0.85 GHz

L2 cache

overclocked clock speed (air)

Core i5 4670K
4.48 GHz
Athlon 850
0.89 GHz

overclocked clock speed (water)

Core i5 4670K
4.55 GHz
Athlon 850
0.85 GHz

Specifications Full list of technical specs

summary

Core i5 4670K  vs
Athlon 850 
Clock speed 3.4 GHz 0.85 GHz
Cores Quad core Single core

features

Has a NX bit Yes No
Instruction set extensions
SSE2
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
3DNow!
Supplemental SSE3
AES
AVX 2.0

details

Core i5 4670K  vs
Athlon 850 
Threads 4 1
L2 cache 1 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 22 nm 180 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.48 GHz 0.89 GHz
Overclocked clock speed (Water) 4.55 GHz 0.85 GHz
PassMark (Overclocked) 5,198.5 212.8
Overclocked clock speed (Air) 4.48 GHz 0.89 GHz

power consumption

Typical power consumption 68.25W N/A
Intel Core i5 4670K
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AMD Athlon 850
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