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Differences What are the advantages of each

Front view of Intel Core i7 2600K

Reasons to consider the
Intel Core i7 2600K

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Much newer manufacturing process 32 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 0.8 GHz Around 4.2x 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
More cores 4 vs 1 3 more cores; run more applications at once
More threads 8 vs 1 7 more threads
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Front view of AMD Athlon 800

Reasons to consider the
AMD Athlon 800

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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 i7 2600K  vs Athlon 800 

clock speed

Core i7 2600K
3.4 GHz
Athlon 800
0.8 GHz

L2 cache

Specifications Full list of technical specs

summary

Core i7 2600K  vs
Athlon 800 
Clock speed 3.4 GHz 0.8 GHz
Cores Quad core Single core
Socket type
LGA 1155
Slot A

features

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

details

Core i7 2600K  vs
Athlon 800 
Threads 8 1
L2 cache 1 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 32 nm 180 nm
Max CPUs 1 1

power consumption

Typical power consumption 114.2W N/A
Intel Core i7 2600K
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AMD Athlon 800
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