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Differences What are the advantages of each

Front view of Intel Core i7 2700K

Reasons to consider the
Intel Core i7 2700K

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Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 3.5 GHz vs 2 GHz 75% higher clock speed
Much better geekbench 2 (32-bit) score 13,097 vs 1,922 More than 6.8x better geekbench 2 (32-bit) score
Much better PassMark (Single core) score 2,003 vs 620 Around 3.2x better PassMark (Single core) score
Much better performance per watt 9.26 pt/W vs 0.52 pt/W More than 17.8x better performance per watt
Much better PassMark score 8,930 vs 1,097 Around 8.2x better PassMark score
Much better overclocked clock speed (Air) 5.11 GHz vs 2.91 GHz More than 75% better overclocked clock speed (Air)
Newer Oct, 2011 vs Aug, 2005 Release date over 6 years later
More threads 8 vs 2 6 more threads
Lower typical power consumption 77.19W vs 89.38W Around 15% lower typical power consumption
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Water) 4.78 GHz vs 2 GHz Around 2.5x better overclocked clock speed (Water)
Higher Maximum operating temperature 72.6 °C vs 65 °C More than 10% higher Maximum operating temperature
Lower annual home energy cost 22.89 $/year vs 26.5 $/year Around 15% lower annual home energy cost
Lower annual commercial energy cost 83.22 $/year vs 96.36 $/year Around 15% lower annual commercial energy cost
Front view of AMD Opteron 170

Reasons to consider the
AMD Opteron 170

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Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core

Benchmarks Real world tests of Core i7 2700K vs Opteron 170

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 2700K
13,097
Opteron 170
1,922

GeekBench

Core i7 2700K
16,969
Opteron 170
1,922

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 2700K  vs
Opteron 170 
Clock speed 3.5 GHz 2 GHz
Cores Quad core Dual core
Socket type
LGA 1155
939

features

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

details

Core i7 2700K  vs
Opteron 170 
Threads 8 2
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 1 1
Clock multiplier 35 10
Operating temperature Unknown - 72.6°C 0 - 65°C

overclocking

Overclocked clock speed 5.11 GHz 2.91 GHz
Overclocked clock speed (Water) 4.78 GHz 2 GHz
PassMark (Overclocked) 4,204.6 1,282.6
Overclocked clock speed (Air) 5.11 GHz 2.91 GHz

power consumption

TDP 95W 110W
Annual home energy cost 22.89 $/year 26.5 $/year
Annual commercial energy cost 83.22 $/year 96.36 $/year
Performance per watt 9.26 pt/W 0.52 pt/W
Typical power consumption 77.19W 89.38W
Intel Core i7 2700K
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AMD Opteron 170
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