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Intel Xeon X5660

CPUBoss Winner
Front view of Intel Xeon X5660

Differences What are the advantages of each

Front view of Intel Xeon X5660

Reasons to consider the
Intel Xeon X5660

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Much higher clock speed 2.8 GHz vs 2.2 GHz More than 25% higher clock speed
More cores 6 vs 2 Three times as many cores; run more applications at once
Much better PassMark score 7,804 vs 1,291 More than 6x better PassMark score
Much better overclocked clock speed (Air) 4.13 GHz vs 2.2 GHz Around 90% better overclocked clock speed (Air)
More threads 12 vs 2 10 more threads
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 8.02 pt/W vs 0.87 pt/W Around 9.2x better performance per watt
Much higher Maximum operating temperature 81.3 °C vs 67 °C More than 20% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.73 GHz vs 2.2 GHz Around 2.2x better overclocked clock speed (Water)
Newer Mar, 2010 vs May, 2005 Release date over 4 years later
Front view of AMD Opteron 275

Reasons to consider the
AMD Opteron 275

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Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Lower typical power consumption 69.06W vs 77.19W More than 10% lower typical power consumption
Lower annual commercial energy cost 74.46 $/year vs 83.22 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 20.48 $/year vs 22.89 $/year More than 10% lower annual home energy cost

Benchmarks Real world tests of Xeon X5660 vs Opteron 275

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5660
20,633
Opteron 275
2,534

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5660
1,520,000 MB/s
Opteron 275
60,200 MB/s

PassMark Data courtesy Passmark

Xeon X5660
7,804
Opteron 275
1,291

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon X5660  vs
Opteron 275 
Clock speed 2.8 GHz 2.2 GHz
Cores Hexa core Dual 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
Supports dynamic frequency scaling Yes Yes

details

Xeon X5660  vs
Opteron 275 
Threads 12 2
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 1 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 2 2
Clock multiplier 21 11
Voltage range 0.75 - 1.35V 1.2 - UnknownV
Operating temperature Unknown - 81.3°C 0 - 67°C

overclocking

Overclocked clock speed 4.13 GHz 2.2 GHz
Overclocked clock speed (Water) 4.73 GHz 2.2 GHz
Overclocked clock speed (Air) 4.13 GHz 2.2 GHz

power consumption

TDP 95W 85W
Annual home energy cost 22.89 $/year 20.48 $/year
Annual commercial energy cost 83.22 $/year 74.46 $/year
Performance per watt 8.02 pt/W 0.87 pt/W
Typical power consumption 77.19W 69.06W
Intel Xeon X5660
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AMD Opteron 275
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