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Differences What are the advantages of each

Front view of Intel Xeon EC3539

Reasons to consider the
Intel Xeon EC3539

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Much lower typical power consumption 52.81W vs 135.63W 2.6x lower typical power consumption
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
Higher Maximum operating temperature 74.6 °C vs 67.9 °C Around 10% higher Maximum operating temperature
Newer Feb, 2010 vs Oct, 2008 Release date over 1 years later
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 2.13 GHz Around 25% higher clock speed
Much better overclocked clock speed (Air) 4.22 GHz vs 2.13 GHz Around 2x better overclocked clock speed (Air)
More threads 8 vs 4 Twice as many threads
Much better overclocked clock speed (Water) 4.24 GHz vs 2.13 GHz Around 2x better overclocked clock speed (Water)

Features Key features of the Xeon EC3539  vs Core i7 920 

clock speed

Xeon EC3539
2.13 GHz
Core i7 920
2.66 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon EC3539
2.13 GHz
Core i7 920
4.22 GHz

overclocked clock speed (water)

Xeon EC3539
2.13 GHz
Core i7 920
4.24 GHz

TDP

Specifications Full list of technical specs

summary

Xeon EC3539  vs
Core i7 920 
Clock speed 2.13 GHz 2.66 GHz
Cores Quad core Quad core
Socket type
LGA 1366

features

Has a NX bit Yes Yes
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

memory controller

Memory controller Built-in Built-in
Channels Triple Channel Triple Channel
Supports ECC Yes No

details

Xeon EC3539  vs
Core i7 920 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 1 - 1.5V 0.8 - 1.38V
Operating temperature Unknown - 74.6°C Unknown - 67.9°C

overclocking

Overclocked clock speed 2.13 GHz 4.22 GHz
Overclocked clock speed (Water) 2.13 GHz 4.24 GHz
Overclocked clock speed (Air) 2.13 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

bus

Architecture DMI QPI
Number of links 1 1
Transfer rate 2,500 MT/s 4,800 MT/s
Intel Xeon EC3539
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Intel Core i7 920
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