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Differences What are the advantages of each

Front view of Intel Xeon E7-4820 v3

Reasons to consider the
Intel Xeon E7-4820 v3

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Supports more RAM 1,572,864 MB vs 786,432 MB Supports 2x more RAM
More threads 20 vs 16 4 more threads
Newer Apr, 2015 vs Jan, 2014 Release date over 1 years later
Front view of Intel Xeon E5-4620 v2

Reasons to consider the
Intel Xeon E5-4620 v2

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Much higher clock speed 2.6 GHz vs 1.9 GHz More than 35% higher clock speed
Lower typical power consumption 77.19W vs 93.44W More than 15% lower typical power consumption
Lower annual commercial energy cost 83.22 $/year vs 100.74 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 27.7 $/year More than 15% lower annual home energy cost

Features Key features of the Xeon E7-4820 v3  vs E5-4620 v2 

clock speed

Specifications Full list of technical specs

summary

Xeon E7-4820 v3  vs
E5-4620 v2 
Clock speed 1.9 GHz 2.6 GHz
Cores Deca core Octa core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
AES
AVX
AVX 2.0
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 42,666.64 MB/s 51,200 MB/s
Maximum memory size 1,572,864 MB 786,432 MB

details

Xeon E7-4820 v3  vs
E5-4620 v2 
Architecture x86-64 x86-64
Threads 20 16
Manufacture process 22 nm 22 nm
Max CPUs 4 4
Operating temperature Unknown - 70°C Unknown - 75°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 115W 95W
Annual home energy cost 27.7 $/year 22.89 $/year
Annual commercial energy cost 100.74 $/year 83.22 $/year
Typical power consumption 93.44W 77.19W

bus

Architecture QPI QPI
Number of links 3 2
Data rate 76,800 MB/s 57,600 MB/s
Transfer rate 6,400 MT/s 7,200 MT/s
Clock speed 3,200 MHz 3,600 MHz
Intel Xeon E7-4820 v3
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Intel Xeon E5-4620 v2
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