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Differences What are the advantages of each

Front view of Intel Core i7 4770K

Reasons to consider the
Intel Core i7 4770K

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Much newer manufacturing process 22 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3.5 GHz vs 2.6 GHz Around 35% higher clock speed
Much better overclocked clock speed (Air) 4.48 GHz vs 2.76 GHz More than 60% better overclocked clock speed (Air)
Newer Jun, 2013 vs Feb, 2005 Release date over 8 years later
More threads 8 vs 1 7 more threads
More cores 4 vs 1 3 more cores; run more applications at once
Lower typical power consumption 68.25W vs 75.24W Around 10% lower typical power consumption
Much better overclocked clock speed (Water) 4.55 GHz vs 2.6 GHz Around 75% better overclocked clock speed (Water)
Higher Maximum operating temperature 72.72 °C vs 67 °C Around 10% higher Maximum operating temperature
Lower annual home energy cost 20.24 $/year vs 22.31 $/year Around 10% lower annual home energy cost
Lower annual commercial energy cost 73.58 $/year vs 81.12 $/year Around 10% lower annual commercial energy cost
Front view of AMD Opteron 852

Reasons to consider the
AMD Opteron 852

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core

Features Key features of the Core i7 4770K  vs Opteron 852 

clock speed

Core i7 4770K
3.5 GHz
Opteron 852
2.6 GHz

L2 cache

overclocked clock speed (air)

Core i7 4770K
4.48 GHz
Opteron 852
2.76 GHz

overclocked clock speed (water)

Core i7 4770K
4.55 GHz
Opteron 852
2.6 GHz

TDP

Specifications Full list of technical specs

summary

Core i7 4770K  vs
Opteron 852 
Clock speed 3.5 GHz 2.6 GHz
Cores Quad core Single core

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
3DNow!
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

details

Core i7 4770K  vs
Opteron 852 
Threads 8 1
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 22 nm 90 nm
Max CPUs 1 8
Operating temperature Unknown - 72.72°C 0 - 67°C

overclocking

Overclocked clock speed 4.48 GHz 2.76 GHz
Overclocked clock speed (Water) 4.55 GHz 2.6 GHz
Overclocked clock speed (Air) 4.48 GHz 2.76 GHz

power consumption

TDP 84W 92.6W
Annual home energy cost 20.24 $/year 22.31 $/year
Annual commercial energy cost 73.58 $/year 81.12 $/year
Typical power consumption 68.25W 75.24W
Intel Core i7 4770K
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AMD Opteron 852
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