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Differences What are the advantages of each

Front view of Intel Xeon E5-2640 v3

Reasons to consider the
Intel Xeon E5-2640 v3

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Higher clock speed 2.6 GHz vs 2 GHz More than 30% higher clock speed
Lower typical power consumption 73.13W vs 93.44W More than 20% lower typical power consumption
Higher Maximum operating temperature 74.3 °C vs 67 °C More than 10% higher Maximum operating temperature
Lower annual home energy cost 21.68 $/year vs 27.7 $/year More than 20% lower annual home energy cost
Lower annual commercial energy cost 78.84 $/year vs 100.74 $/year More than 20% lower annual commercial energy cost
Front view of Intel E7-4820V4

Reasons to consider the
Intel E7-4820V4

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Much newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Supports more RAM 3,145,728 MB vs 786,432 MB Supports 4x more RAM
Newer Apr, 2016 vs Jul, 2014 Release date over 1 years later
More cores 10 vs 8 2 more cores; run more applications at once
More threads 20 vs 16 4 more threads

Features Key features of the Xeon E5-2640 v3  vs E7-4820V4 

clock speed

Xeon E5-2640 v3
2.6 GHz
E7-4820V4
2 GHz

overclocked clock speed (air)

Xeon E5-2640 v3
2.6 GHz
E7-4820V4
2 GHz

overclocked clock speed (water)

Xeon E5-2640 v3
2.6 GHz
E7-4820V4
2 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E5-2640 v3  vs
E7-4820V4 
Clock speed 2.6 GHz 2 GHz
Cores Octa core Deca 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

power consumption

TDP 90W 115W
Annual home energy cost 21.68 $/year 27.7 $/year
Annual commercial energy cost 78.84 $/year 100.74 $/year
Typical power consumption 73.13W 93.44W

bus

Architecture QPI FSB
Number of links 2 3
Transfer rate 8,000 MT/s 6,400 MT/s

details

Xeon E5-2640 v3  vs
E7-4820V4 
Architecture x86-64 x86-64
Threads 16 20
Manufacture process 22 nm 14 nm
Max CPUs 2 4
Operating temperature Unknown - 74.3°C Unknown - 67°C

overclocking

Overclocked clock speed 2.6 GHz 2 GHz
Overclocked clock speed (Water) 2.6 GHz 2 GHz
Overclocked clock speed (Air) 2.6 GHz 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
Memory type
DDR3-1333
DDR3-1066
DDR
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 6,400 MB/s 42,666.64 MB/s
Maximum memory size 786,432 MB 3,145,728 MB
Intel Xeon E5-2640 v3
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Intel E7-4820V4
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