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Differences What are the advantages of each

Front view of Intel Xeon E7-8857 v2

Reasons to consider the
Intel Xeon E7-8857 v2

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Significantly higher clock speed 3 GHz vs 2.8 GHz More than 5% higher clock speed
Higher turbo clock speed 3.6 GHz vs 3.4 GHz More than 5% higher turbo clock speed
Supports more CPUs in SMP configuration 8 vs 4 Twice as many CPUs in SMP configuration
Lower typical power consumption 105.63W vs 125.94W More than 15% lower typical power consumption
Lower annual commercial energy cost 113.88 $/year vs 135.78 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 31.32 $/year vs 37.34 $/year More than 15% lower annual home energy cost
Front view of Intel Xeon E7-4890 v2

Reasons to consider the
Intel Xeon E7-4890 v2

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Much more l3 cache 37.5 MB vs 30 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 30 vs 12 18 more threads
More l2 cache 3.5 MB vs 3 MB More than 15% more l2 cache; more data can be stored in the l2 cache for quick access later

Features Key features of the Xeon E7-8857 v2  vs E7-4890 v2 

clock speed

turbo clock speed

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E7-8857 v2  vs
E7-4890 v2 
Clock speed 3 GHz 2.8 GHz
Turbo clock speed 3.6 GHz 3.4 GHz
Cores Duodeca core Pentadeca core
Socket type
LGA 2011
Is unlocked No No

features

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

power consumption

TDP 130W 155W
Annual home energy cost 31.32 $/year 37.34 $/year
Annual commercial energy cost 113.88 $/year 135.78 $/year
Typical power consumption 105.63W 125.94W

bus

Architecture QPI QPI
Number of links 3 3
Data rate 96,000 MB/s 96,000 MB/s
Transfer rate 8,000 MT/s 8,000 MT/s
Clock speed 4,000 MHz 4,000 MHz

details

Xeon E7-8857 v2  vs
E7-4890 v2 
Architecture x86-64 x86-64
Threads 12 30
L2 cache 3 MB 3.5 MB
L2 cache per core 0.25 MB/core 0.23 MB/core
L3 cache 30 MB 37.5 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 8 4
Clock multiplier 30 28
Operating temperature Unknown - 73°C Unknown - 77°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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
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 1,572,864 MB
Intel Xeon E7-8857 v2
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Intel Xeon E7-4890 v2
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