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Differences What are the advantages of each

Front view of Intel Core i7 990X

Reasons to consider the
Intel Core i7 990X

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Much newer manufacturing process 32 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 3.46 GHz vs 1.4 GHz Around 2.5x higher clock speed
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 better overclocked clock speed (Air) 4.58 GHz vs 1.4 GHz More than 3.2x better overclocked clock speed (Air)
More cores 6 vs 1 5 more cores; run more applications at once
More threads 12 vs 1 11 more threads
Newer Feb, 2011 vs Feb, 2004 Release date over 7 years later
Much better overclocked clock speed (Water) 4.47 GHz vs 1.4 GHz Around 3.2x better overclocked clock speed (Water)
Front view of AMD Opteron 240 EE

Reasons to consider the
AMD Opteron 240 EE

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Much lower typical power consumption 24.38W vs 105.63W 4.3x lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 7.23 $/year vs 31.32 $/year 4.3x lower annual home energy cost
Much lower annual commercial energy cost 26.28 $/year vs 113.88 $/year 4.3x lower annual commercial energy cost

Features Key features of the Core i7 990X  vs Opteron 240 EE 

clock speed

Core i7 990X
3.46 GHz
Opteron 240 EE
1.4 GHz

L2 cache

overclocked clock speed (air)

Core i7 990X
4.58 GHz
Opteron 240 EE
1.4 GHz

overclocked clock speed (water)

Core i7 990X
4.47 GHz
Opteron 240 EE
1.4 GHz

Specifications Full list of technical specs

summary

Core i7 990X  vs
Opteron 240 EE 
Clock speed 3.46 GHz 1.4 GHz
Cores Hexa core Single core
Socket type
LGA 1366
940

features

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

details

Core i7 990X  vs
Opteron 240 EE 
Threads 12 1
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 1 MB/core
Manufacture process 32 nm 130 nm
Max CPUs 1 2
Clock multiplier 26 7
Voltage range 0.8 - 1.38V 1.1 - UnknownV

overclocking

Overclocked clock speed 4.58 GHz 1.4 GHz
Overclocked clock speed (Water) 4.47 GHz 1.4 GHz
Overclocked clock speed (Air) 4.58 GHz 1.4 GHz

power consumption

TDP 130W 30W
Annual home energy cost 31.32 $/year 7.23 $/year
Annual commercial energy cost 113.88 $/year 26.28 $/year
Typical power consumption 105.63W 24.38W
Intel Core i7 990X
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AMD Opteron 240 EE
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