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Differences What are the advantages of each

Front view of Intel Xeon E5-4627 v2

Reasons to consider the
Intel Xeon E5-4627 v2

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Much higher Maximum operating temperature 88 °C vs 74 °C Around 20% higher Maximum operating temperature
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Newer Jan, 2014 vs Jul, 2013 Release date 6 months later
Front view of Intel Xeon E5 2667 v2

Reasons to consider the
Intel Xeon E5 2667 v2

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Much more l3 cache 25 MB vs 16 MB More than 55% more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly higher turbo clock speed 4 GHz vs 3.6 GHz More than 10% higher turbo clock speed
More threads 16 vs 8 Twice as many threads
Much more l3 cache per core 3.13 MB/core vs 2 MB/core More than 55% more l3 cache per core

Features Key features of the Xeon E5-4627 v2  vs E5 2667 v2 

clock speed

turbo clock speed

L3 cache

Specifications Full list of technical specs

summary

Xeon E5-4627 v2  vs
E5 2667 v2 
Clock speed 3.3 GHz 3.3 GHz
Turbo clock speed 3.6 GHz 4 GHz
Cores Octa core Octa core

features

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes No
Maximum bandwidth 59,733.32 MB/s 25,600 MB/s
Maximum memory size 786,432 MB 786,432 MB

details

Xeon E5-4627 v2  vs
E5 2667 v2 
Architecture x86-64 x86-64
Threads 8 16
L3 cache 16 MB 25 MB
L3 cache per core 2 MB/core 3.13 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 4 2
Operating temperature Unknown - 88°C Unknown - 74°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 130W 130W
Annual home energy cost 31.32 $/year 31.32 $/year
Annual commercial energy cost 113.88 $/year 113.88 $/year
Typical power consumption 105.63W 105.63W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 57,600 MB/s 64,000 MB/s
Transfer rate 7,200 MT/s 8,000 MT/s
Clock speed 3,600 MHz 4,000 MHz
Intel Xeon E5-4627 v2
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Intel Xeon E5 2667 v2
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