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Differences What are the advantages of each

Front view of Intel Xeon E6540

Reasons to consider the
Intel Xeon E6540

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More cores 6 vs 4 2 more cores; run more applications at once
More threads 12 vs 4 Three times as many threads
Newer Mar, 2010 vs Nov, 2007 Release date over 2 years later
Front view of Intel Xeon E5450

Reasons to consider the
Intel Xeon E5450

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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 higher clock speed 3 GHz vs 2 GHz 50% higher clock speed
Much more l2 cache per core 3 MB/core vs 0.33 MB/core 9x more l2 cache per core
Much better overclocked clock speed (Air) 3.83 GHz vs 2 GHz More than 90% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.1 GHz vs 2 GHz More than 2x better overclocked clock speed (Water)
Lower typical power consumption 65W vs 85.31W Around 25% lower typical power consumption
Lower annual commercial energy cost 70.08 $/year vs 91.98 $/year Around 25% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 25.29 $/year Around 25% lower annual home energy cost

Features Key features of the Xeon E6540  vs E5450 

clock speed

Xeon E6540
2 GHz
Xeon E5450
3 GHz

L2 cache

Xeon E6540
2 MB
Xeon E5450
12 MB

overclocked clock speed (air)

Xeon E6540
2 GHz
Xeon E5450
3.83 GHz

overclocked clock speed (water)

Xeon E6540
2 GHz
Xeon E5450
4.1 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E6540  vs
E5450 
Clock speed 2 GHz 3 GHz
Cores Hexa core Quad core
Socket type
LGA 1567
LGA 771

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 105W 80W
Annual home energy cost 25.29 $/year 19.27 $/year
Annual commercial energy cost 91.98 $/year 70.08 $/year
Typical power consumption 85.31W 65W

details

Xeon E6540  vs
E5450 
Threads 12 4
L2 cache 2 MB 12 MB
L2 cache per core 0.33 MB/core 3 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 2 2

overclocking

Overclocked clock speed 2 GHz 3.83 GHz
Overclocked clock speed (Water) 2 GHz 4.1 GHz
Overclocked clock speed (Air) 2 GHz 3.83 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

Architecture QPI FSB
Number of links 4 1
Clock speed 3,200 MHz 1,333 MHz
Intel Xeon E6540
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Intel Xeon E5450
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