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Differences What are the advantages of each

Front view of Intel Xeon E7-8891 v2

Reasons to consider the
Intel Xeon E7-8891 v2

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Higher clock speed 3.2 GHz vs 2.8 GHz Around 15% higher clock speed
Slightly higher turbo clock speed 3.7 GHz vs 3.5 GHz More than 5% higher turbo clock speed
Lower typical power consumption 125.94W vs 134.06W More than 5% lower typical power consumption
Lower annual home energy cost 37.34 $/year vs 39.75 $/year More than 5% lower annual home energy cost
Lower annual commercial energy cost 135.78 $/year vs 144.54 $/year More than 5% lower annual commercial energy cost
Front view of Intel E7-8891V4

Reasons to consider the
Intel E7-8891V4

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Supports more RAM 3,145,728 MB vs 1,572,864 MB Supports 2x more RAM
Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Apr, 2016 vs Feb, 2014 Release date over 2 years later

Features Key features of the Xeon E7-8891 v2  vs E7-8891V4 

clock speed

Xeon E7-8891 v2
3.2 GHz
E7-8891V4
2.8 GHz

turbo clock speed

Xeon E7-8891 v2
3.7 GHz
E7-8891V4
3.5 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E7-8891 v2  vs
E7-8891V4 
Clock speed 3.2 GHz 2.8 GHz
Turbo clock speed 3.7 GHz 3.5 GHz
Cores Deca 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 51,200 MB/s
Maximum memory size 1,572,864 MB 3,145,728 MB

details

Xeon E7-8891 v2  vs
E7-8891V4 
Architecture x86-64 x86-64
Threads 20 20
Manufacture process 22 nm 14 nm
Max CPUs 8 8
Operating temperature Unknown - 77°C Unknown - 79°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 155W 165W
Annual home energy cost 37.34 $/year 39.75 $/year
Annual commercial energy cost 135.78 $/year 144.54 $/year
Typical power consumption 125.94W 134.06W

bus

Architecture QPI FSB
Number of links 3 3
Transfer rate 8,000 MT/s 9,600 MT/s
Intel Xeon E7-8891 v2
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Intel E7-8891V4
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