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Differences What are the advantages of each

Front view of Intel Xeon X5670

Reasons to consider the
Intel Xeon X5670

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Much higher clock speed 2.93 GHz vs 2.4 GHz More than 20% higher clock speed
More cores 6 vs 2 Three times as many cores; run more applications at once
More threads 12 vs 2 10 more threads
Much better overclocked clock speed (Air) 4.29 GHz vs 2.56 GHz Around 70% better overclocked clock speed (Air)
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 8.54 pt/W vs 0.84 pt/W Around 10.2x 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) 4.5 GHz vs 2.4 GHz More than 85% better overclocked clock speed (Water)
Newer Mar, 2010 vs Sep, 2005 Release date over 4 years later
Front view of AMD Opteron 880

Reasons to consider the
AMD Opteron 880

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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
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
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 X5670 vs Opteron 880

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5670
24,364
Opteron 880
1,379

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5670
1,590,000 MB/s
Opteron 880
63,500 MB/s

Specifications Full list of technical specs

summary

Xeon X5670  vs
Opteron 880 
Clock speed 2.93 GHz 2.4 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 X5670  vs
Opteron 880 
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 8
Clock multiplier 22 12
Voltage range 0.75 - 1.35V 1 - UnknownV
Operating temperature Unknown - 81.3°C 0 - 67°C

overclocking

Overclocked clock speed 4.29 GHz 2.56 GHz
Overclocked clock speed (Water) 4.5 GHz 2.4 GHz
Overclocked clock speed (Air) 4.29 GHz 2.56 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 8.54 pt/W 0.84 pt/W
Typical power consumption 77.19W 69.06W
Intel Xeon X5670
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AMD Opteron 880
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