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Differences What are the advantages of each

Front view of Intel Xeon E5220

Reasons to consider the
Intel Xeon E5220

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Much more l2 cache 6 MB vs 1 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 0.25 MB/core 12x more l2 cache per core
Much lower typical power consumption 52.81W vs 135.63W 2.6x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 15.66 $/year vs 48.38 $/year 3.1x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 134.55 $/year 2.4x lower annual commercial energy cost
Front view of Intel Core i7 920

Reasons to consider the
Intel Core i7 920

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Higher clock speed 2.66 GHz vs 2.33 GHz Around 15% higher clock speed
Much better overclocked clock speed (Air) 4.22 GHz vs 2.33 GHz More than 80% better overclocked clock speed (Air)
More threads 8 vs 2 6 more threads
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Water) 4.24 GHz vs 2.33 GHz More than 80% better overclocked clock speed (Water)
Newer Oct, 2008 vs Feb, 2008 Release date 7 months later

Features Key features of the Xeon E5220  vs Core i7 920 

clock speed

Xeon E5220
2.33 GHz
Core i7 920
2.66 GHz

L2 cache

overclocked clock speed (air)

Xeon E5220
2.33 GHz
Core i7 920
4.22 GHz

overclocked clock speed (water)

Xeon E5220
2.33 GHz
Core i7 920
4.24 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E5220  vs
Core i7 920 
Clock speed 2.33 GHz 2.66 GHz
Cores Dual core Quad core
Socket type
LGA 771
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 130W
Annual home energy cost 15.66 $/year 48.38 $/year
Annual commercial energy cost 56.94 $/year 134.55 $/year
Typical power consumption 52.81W 135.63W

bus

Architecture FSB QPI
Number of links 1 1
Clock speed 1,333 MHz 2,400 MHz

details

Xeon E5220  vs
Core i7 920 
Architecture x86-64 x86-64
Threads 2 8
L2 cache 6 MB 1 MB
L2 cache per core 3 MB/core 0.25 MB/core
Manufacture process 45 nm 45 nm
Transistor count 410,000,000 731,000,000
Max CPUs 2 1
Clock multiplier 7 20
Voltage range 0.85 - 1.35V 0.8 - 1.38V
Operating temperature Unknown - 66°C Unknown - 67.9°C

overclocking

Overclocked clock speed 2.33 GHz 4.22 GHz
Overclocked clock speed (Water) 2.33 GHz 4.24 GHz
Overclocked clock speed (Air) 2.33 GHz 4.22 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
Intel Xeon E5220
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Intel Core i7 920
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