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Differences What are the advantages of each

Front view of Intel Xeon E5440

Reasons to consider the
Intel Xeon E5440

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Much higher clock speed 2.83 GHz vs 2.2 GHz Around 30% higher clock speed
Lower typical power consumption 65W vs 77.19W More than 15% lower typical power consumption
Lower annual commercial energy cost 70.08 $/year vs 83.22 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 22.89 $/year More than 15% lower annual home energy cost
Front view of Intel Xeon E5-4603 v2

Reasons to consider the
Intel Xeon E5-4603 v2

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More threads 8 vs 4 Twice as many threads
Newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Newer Jan, 2014 vs Nov, 2007 Release date over 6 years later

Features Key features of the Xeon E5440  vs E5-4603 v2 

clock speed

Xeon E5440
2.83 GHz
Xeon E5-4603 v2
2.2 GHz

Specifications Full list of technical specs

summary

Xeon E5440  vs
E5-4603 v2 
Clock speed 2.83 GHz 2.2 GHz
Cores Quad core Quad core

features

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

bus

Architecture FSB QPI
Number of links 1 2
Clock speed 1,333 MHz 3,200 MHz

details

Xeon E5440  vs
E5-4603 v2 
Architecture x86-64 x86-64
Threads 4 8
Manufacture process 45 nm 22 nm
Max CPUs 2 4
Voltage range 0.85 - 1.35V 0.65 - 1.3V
Operating temperature Unknown - 67°C Unknown - 77°C

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

power consumption

TDP 80W 95W
Annual home energy cost 19.27 $/year 22.89 $/year
Annual commercial energy cost 70.08 $/year 83.22 $/year
Typical power consumption 65W 77.19W
Intel Xeon E5440
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Intel Xeon E5-4603 v2
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