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Differences What are the advantages of each

Front view of Intel Xeon E5-2690

Reasons to consider the
Intel Xeon E5-2690

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Much higher clock speed 2.9 GHz vs 2.6 GHz More than 10% higher clock speed
More cores 8 vs 1 7 more cores; run more applications at once
More threads 16 vs 1 15 more threads
Much 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 PassMark score 14,178 vs 760 Around 18.8x better PassMark score
Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better performance per watt 7.64 pt/W vs 0.46 pt/W Around 16.8x better performance per watt
Much better overclocked clock speed (Air) 3.53 GHz vs 2.73 GHz Around 30% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.92 GHz vs 2.6 GHz More than 50% better overclocked clock speed (Water)
Newer Mar, 2012 vs Feb, 2005 Release date over 7 years later
Front view of AMD Opteron 252

Reasons to consider the
AMD Opteron 252

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Much lower typical power consumption 55.25W vs 109.69W Around 50% 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 commercial energy cost 59.57 $/year vs 118.26 $/year Around 50% lower annual commercial energy cost
Much lower annual home energy cost 16.38 $/year vs 32.52 $/year Around 50% lower annual home energy cost

Benchmarks Real world tests of Xeon E5-2690 vs Opteron 252

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Xeon E5-2690  vs
Opteron 252 
Clock speed 2.9 GHz 2.6 GHz
Cores Octa core Single core
Socket type
LGA 2011
940

features

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

details

Xeon E5-2690  vs
Opteron 252 
Threads 16 1
L2 cache 2 MB 1 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 2 2
Clock multiplier 38 13
Voltage range 0.6 - 1.35V 1.3 - UnknownV
Operating temperature Unknown - 72°C 0 - 67°C

overclocking

Overclocked clock speed 3.53 GHz 2.73 GHz
Overclocked clock speed (Water) 3.92 GHz 2.6 GHz
Overclocked clock speed (Air) 3.53 GHz 2.73 GHz

power consumption

TDP 135W 68W
Annual home energy cost 32.52 $/year 16.38 $/year
Annual commercial energy cost 118.26 $/year 59.57 $/year
Performance per watt 7.64 pt/W 0.46 pt/W
Typical power consumption 109.69W 55.25W
Intel Xeon E5-2690
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AMD Opteron 252
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