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Intel Xeon E5620

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Front view of Intel Xeon E5620

Differences What are the advantages of each

Front view of Intel Xeon E5620

Reasons to consider the
Intel Xeon E5620

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Significantly higher clock speed 2.4 GHz vs 2.2 GHz Around 10% higher clock speed
Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better performance per watt 7.59 pt/W vs 0.87 pt/W Around 8.8x better performance per watt
Much better overclocked clock speed (Air) 3.75 GHz vs 2.2 GHz More than 70% better overclocked clock speed (Air)
More threads 8 vs 2 6 more threads
Much better overclocked clock speed (Water) 4.33 GHz vs 2.2 GHz More than 95% 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 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core

Benchmarks Real world tests of Xeon E5620 vs Opteron 275

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5620
14,086
Opteron 275
2,534

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5620
1,280,000 MB/s
Opteron 275
60,200 MB/s

PassMark Data courtesy Passmark

Xeon E5620
4,873
Opteron 275
1,291

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5620  vs
Opteron 275 
Clock speed 2.4 GHz 2.2 GHz
Cores Quad 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 E5620  vs
Opteron 275 
Threads 8 2
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 2 2
Clock multiplier 18 11
Voltage range 0.75 - 1.35V 1.2 - UnknownV
Operating temperature Unknown - 77.6°C 0 - 67°C

overclocking

Overclocked clock speed 3.75 GHz 2.2 GHz
Overclocked clock speed (Water) 4.33 GHz 2.2 GHz
Overclocked clock speed (Air) 3.75 GHz 2.2 GHz

power consumption

TDP 80W 85W
Annual home energy cost 19.27 $/year 20.48 $/year
Annual commercial energy cost 70.08 $/year 74.46 $/year
Performance per watt 7.59 pt/W 0.87 pt/W
Typical power consumption 65W 69.06W
Intel Xeon E5620
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AMD Opteron 275
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