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Differences What are the advantages of each

Front view of Intel Xeon E5420

Reasons to consider the
Intel Xeon E5420

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Much more l2 cache 12 MB vs 2 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 0.5 MB/core 6x more l2 cache per core
Significantly higher clock speed 2.5 GHz vs 2.3 GHz Around 10% higher clock speed
Much better overclocked clock speed (Air) 3.19 GHz vs 2.3 GHz Around 40% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.94 GHz vs 2.3 GHz More than 70% better overclocked clock speed (Water)
Front view of AMD Opteron 2376

Reasons to consider the
AMD Opteron 2376

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Newer Nov, 2008 vs Nov, 2007 Release date a year later

Benchmarks Real world tests of Xeon E5420 vs Opteron 2376

PassMark Data courtesy Passmark

Xeon E5420
3,534
Opteron 2376
2,283

Specifications Full list of technical specs

summary

Xeon E5420  vs
Opteron 2376 
Clock speed 2.5 GHz 2.3 GHz
Cores Quad core Quad core
Socket type
LGA 771
F

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 75W
Annual home energy cost 19.27 $/year 18.07 $/year
Annual commercial energy cost 70.08 $/year 65.7 $/year
Performance per watt 1.78 pt/W 1.24 pt/W
Typical power consumption 65W 60.94W

details

Xeon E5420  vs
Opteron 2376 
Threads 4 4
L2 cache 12 MB 2 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 2 2
Clock multiplier 7 11
Voltage range 0.85 - 1.35V 1.3 - UnknownV
Operating temperature Unknown - 67°C 0 - 55°C

overclocking

Overclocked clock speed 3.19 GHz 2.3 GHz
Overclocked clock speed (Water) 3.94 GHz 2.3 GHz
Overclocked clock speed (Air) 3.19 GHz 2.3 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

bus

Clock speed 1,333 MHz 2,000 MHz
Intel Xeon E5420
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AMD Opteron 2376
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