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Differences What are the advantages of each

Front view of Intel Xeon E7540

Reasons to consider the
Intel Xeon E7540

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Significantly more l3 cache 18 MB vs 15 MB 20% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 8 vs 4 Twice as many CPUs in SMP configuration
More l3 cache per core 3 MB/core vs 2.5 MB/core 20% more l3 cache per core
Front view of Intel Xeon E5-4607 v2

Reasons to consider the
Intel Xeon E5-4607 v2

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Much higher clock speed 2.6 GHz vs 2 GHz More than 30% higher clock speed
Higher turbo clock speed 2.6 GHz vs 2.27 GHz Around 15% higher turbo clock speed
Newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 77.19W vs 85.31W Around 10% lower typical power consumption
Newer Jan, 2014 vs Mar, 2010 Release date over 3 years later
Lower annual commercial energy cost 83.22 $/year vs 91.98 $/year Around 10% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 25.29 $/year Around 10% lower annual home energy cost

Features Key features of the Xeon E7540  vs E5-4607 v2 

clock speed

Xeon E7540
2 GHz
Xeon E5-4607 v2
2.6 GHz

turbo clock speed

Xeon E7540
2.27 GHz
Xeon E5-4607 v2
2.6 GHz

L3 cache

Specifications Full list of technical specs

summary

Xeon E7540  vs
E5-4607 v2 
Clock speed 2 GHz 2.6 GHz
Turbo clock speed 2.27 GHz 2.6 GHz
Cores Hexa core Hexa core

features

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

power consumption

TDP 105W 95W
Annual home energy cost 25.29 $/year 22.89 $/year
Annual commercial energy cost 91.98 $/year 83.22 $/year
Typical power consumption 85.31W 77.19W

details

Xeon E7540  vs
E5-4607 v2 
Threads 12 12
L3 cache 18 MB 15 MB
L3 cache per core 3 MB/core 2.5 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 8 4
Voltage range 0.68 - 1.35V 0.65 - 1.3V
Operating temperature Unknown - 64°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

bus

Architecture QPI QPI
Number of links 4 2
Data rate 102,400 MB/s 51,200 MB/s
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Xeon E7540
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Intel Xeon E5-4607 v2
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