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Differences What are the advantages of each

Front view of Intel Core i7 860

Reasons to consider the
Intel Core i7 860

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Much newer manufacturing process 45 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 2.8 GHz vs 2.4 GHz More than 15% higher clock speed
Much better overclocked clock speed (Air) 4.14 GHz vs 2.73 GHz More than 50% better overclocked clock speed (Air)
More threads 8 vs 1 7 more threads
More cores 4 vs 1 3 more cores; run more applications at once
Newer Jul, 2009 vs May, 2004 Release date over 5 years later
Much better overclocked clock speed (Water) 4.15 GHz vs 2.4 GHz Around 75% better overclocked clock speed (Water)
Front view of AMD Opteron 850

Reasons to consider the
AMD Opteron 850

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Much lower typical power consumption 69.31W vs 156.35W 2.3x lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much lower annual home energy cost 20.55 $/year vs 53.98 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 74.72 $/year vs 157.68 $/year 2.1x lower annual commercial energy cost

Features Key features of the Core i7 860  vs Opteron 850 

clock speed

Core i7 860
2.8 GHz
Opteron 850
2.4 GHz

L2 cache

overclocked clock speed (air)

Core i7 860
4.14 GHz
Opteron 850
2.73 GHz

overclocked clock speed (water)

Core i7 860
4.15 GHz
Opteron 850
2.4 GHz

TDP

Specifications Full list of technical specs

summary

Core i7 860  vs
Opteron 850 
Clock speed 2.8 GHz 2.4 GHz
Cores Quad core Single core
Socket type
LGA 1156
940

features

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

details

Core i7 860  vs
Opteron 850 
Threads 8 1
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 45 nm 130 nm
Max CPUs 1 8
Clock multiplier 21 12
Voltage range 0.65 - 1.4V 1.3 - UnknownV
Operating temperature Unknown - 72.7°C 0 - 71°C

overclocking

Overclocked clock speed 4.14 GHz 2.73 GHz
Overclocked clock speed (Water) 4.15 GHz 2.4 GHz
Overclocked clock speed (Air) 4.14 GHz 2.73 GHz

power consumption

TDP 95W 85.3W
Annual home energy cost 53.98 $/year 20.55 $/year
Annual commercial energy cost 157.68 $/year 74.72 $/year
Typical power consumption 156.35W 69.31W
Intel Core i7 860
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AMD Opteron 850
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