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Differences What are the advantages of each

Front view of Intel Xeon E5-4650

Reasons to consider the
Intel Xeon E5-4650

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Much more l3 cache 20 MB vs 16 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 16 vs 8 Twice as many threads
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Front view of Intel Xeon E5-4627 v2

Reasons to consider the
Intel Xeon E5-4627 v2

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Much higher clock speed 3.3 GHz vs 2.7 GHz More than 20% higher clock speed
Higher turbo clock speed 3.6 GHz vs 3.3 GHz Around 10% higher turbo clock speed
Supports more RAM 786,432 MB vs 393,216 MB Supports 2x more RAM
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Jan, 2014 vs May, 2012 Release date over 1 years later

Features Key features of the Xeon E5-4650  vs E5-4627 v2 

clock speed

Xeon E5-4650
2.7 GHz
Xeon E5-4627 v2
3.3 GHz

turbo clock speed

Xeon E5-4650
3.3 GHz
Xeon E5-4627 v2
3.6 GHz

L3 cache

Specifications Full list of technical specs


Xeon E5-4650  vs
E5-4627 v2 
Clock speed 2.7 GHz 3.3 GHz
Turbo clock speed 3.3 GHz 3.6 GHz
Cores Octa core Octa core


Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 59,733.32 MB/s
Maximum memory size 393,216 MB 786,432 MB


Xeon E5-4650  vs
E5-4627 v2 
Architecture x86-64 x86-64
Threads 16 8
L3 cache 20 MB 16 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 4 4
Voltage range 0.6 - 1.35V 0.65 - 1.3V

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


Architecture QPI QPI
Number of links 2 2
Data rate 64,000 MB/s 57,600 MB/s
Transfer rate 8,000 MT/s 7,200 MT/s
Clock speed 4,000 MHz 3,600 MHz
Intel Xeon E5-4650
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Intel Xeon E5-4627 v2
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