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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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Higher clock speed 2.7 GHz vs 2.2 GHz Around 25% higher clock speed
Higher turbo clock speed 3.3 GHz vs 3 GHz Around 10% higher turbo clock speed
Better overclocked clock speed (Air) 2.94 GHz vs 2.2 GHz Around 35% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2.7 GHz vs 2.2 GHz Around 25% better overclocked clock speed (Water)
Front view of Intel E5-4660V4

Reasons to consider the
Intel E5-4660V4

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Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 16 vs 8 Twice as many cores; run more applications at once
More threads 32 vs 16 Twice as many threads
Supports more RAM 1,572,864 MB vs 393,216 MB Supports 4x more RAM
Newer Apr, 2016 vs May, 2012 Release date over 3 years later
Lower typical power consumption 97.5W vs 105.63W Around 10% lower typical power consumption
Lower annual home energy cost 28.91 $/year vs 31.32 $/year Around 10% lower annual home energy cost
Lower annual commercial energy cost 105.12 $/year vs 113.88 $/year Around 10% lower annual commercial energy cost

Features Key features of the Xeon E5-4650  vs E5-4660V4 

clock speed

Xeon E5-4650
2.7 GHz
E5-4660V4
2.2 GHz

turbo clock speed

Xeon E5-4650
3.3 GHz
E5-4660V4
3 GHz

overclocked clock speed (air)

Xeon E5-4650
2.94 GHz
E5-4660V4
2.2 GHz

overclocked clock speed (water)

Xeon E5-4650
2.7 GHz
E5-4660V4
2.2 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E5-4650  vs
E5-4660V4 
Clock speed 2.7 GHz 2.2 GHz
Turbo clock speed 3.3 GHz 3 GHz
Cores Octa core 16 core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 130W 120W
Annual home energy cost 31.32 $/year 28.91 $/year
Annual commercial energy cost 113.88 $/year 105.12 $/year
Typical power consumption 105.63W 97.5W

bus

Architecture QPI FSB
Number of links 2 2
Transfer rate 8,000 MT/s 9,600 MT/s

details

Xeon E5-4650  vs
E5-4660V4 
Architecture x86-64 x86-64
Threads 16 32
Manufacture process 32 nm 14 nm
Max CPUs 4 4

overclocking

Overclocked clock speed 2.94 GHz 2.2 GHz
Overclocked clock speed (Water) 2.7 GHz 2.2 GHz
Overclocked clock speed (Air) 2.94 GHz 2.2 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

memory controller

Memory controller Built-in Built-in
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum memory size 393,216 MB 1,572,864 MB
Intel Xeon E5-4650
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Intel E5-4660V4
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