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Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Much newer manufacturing process 14 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 4 GHz vs 2.2 GHz More than 80% higher clock speed
Much better PassMark (Single core) score 2,349 vs 683 Around 3.5x better PassMark (Single core) score
Much better PassMark score 11,109 vs 1,167 More than 9.5x better PassMark score
Newer Jul, 2015 vs Aug, 2005 Release date over 10 years later
Much better overclocked clock speed (Air) 4.61 GHz vs 2.77 GHz More than 65% better overclocked clock speed (Air)
Lower typical power consumption 73.94W vs 89.38W More than 15% lower typical power consumption
More threads 8 vs 2 6 more threads
More cores 4 vs 2 Twice as many cores; run more applications at once
Significantly better performance per watt 3.49 pt/W vs 0.57 pt/W Around 6.2x better performance per watt
Much better overclocked clock speed (Water) 4.77 GHz vs 2.2 GHz Around 2.2x better overclocked clock speed (Water)
Lower annual commercial energy cost 79.72 $/year vs 96.36 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 21.92 $/year vs 26.5 $/year More than 15% lower annual home energy cost
Front view of AMD Opteron 175

Reasons to consider the
AMD Opteron 175

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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 6700K vs Opteron 175

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 6700K
17,169
Opteron 175
2,305

GeekBench

Core i7 6700K
17,169
Opteron 175
2,334

PassMark Data courtesy Passmark

Core i7 6700K
11,109
Opteron 175
1,167

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6700K  vs
Opteron 175 
Clock speed 4 GHz 2.2 GHz
Cores Quad core Dual core

features

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

details

Core i7 6700K  vs
Opteron 175 
Threads 8 2
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 14 nm 90 nm
Max CPUs 1 1
Operating temperature Unknown - 64°C 0 - 65°C

overclocking

Overclocked clock speed 4.61 GHz 2.77 GHz
Overclocked clock speed (Water) 4.77 GHz 2.2 GHz
Overclocked clock speed (Air) 4.61 GHz 2.77 GHz

power consumption

TDP 91W 110W
Annual home energy cost 21.92 $/year 26.5 $/year
Annual commercial energy cost 79.72 $/year 96.36 $/year
Performance per watt 3.49 pt/W 0.57 pt/W
Typical power consumption 73.94W 89.38W
Intel Core i7 6700K
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AMD Opteron 175
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