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Differences What are the advantages of each

Front view of Intel Xeon E7-4850 v3

Reasons to consider the
Intel Xeon E7-4850 v3

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Significantly higher turbo clock speed 2.8 GHz vs 2.27 GHz Around 25% higher turbo clock speed
More threads 28 vs 16 12 more threads
Significantly higher clock speed 2.2 GHz vs 2 GHz More than 10% higher clock speed
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Apr, 2015 vs Apr, 2011 Release date over 4 years later
Front view of Intel Xeon E7-4820

Reasons to consider the
Intel Xeon E7-4820

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Supports more RAM 2,097,152 MB vs 1,572,864 MB Supports around 35% more RAM
Lower typical power consumption 85.31W vs 93.44W Around 10% lower typical power consumption
Lower annual commercial energy cost 91.98 $/year vs 100.74 $/year Around 10% lower annual commercial energy cost
Lower annual home energy cost 25.29 $/year vs 27.7 $/year Around 10% lower annual home energy cost

Features Key features of the Xeon E7-4850 v3  vs E7-4820 

clock speed

turbo clock speed

Xeon E7-4850 v3
2.8 GHz
Xeon E7-4820
2.27 GHz

Specifications Full list of technical specs

summary

Xeon E7-4850 v3  vs
E7-4820 
Clock speed 2.2 GHz 2 GHz
Turbo clock speed 2.8 GHz 2.27 GHz
Cores Processing Cores Octa core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
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
DDR
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 25,600 MB/s
Maximum memory size 1,572,864 MB 2,097,152 MB

details

Xeon E7-4850 v3  vs
E7-4820 
Architecture x86-64 x86-64
Threads 28 16
Manufacture process 22 nm 32 nm
Max CPUs 4 4
Operating temperature Unknown - 70°C Unknown - 64°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 105W
Annual home energy cost 27.7 $/year 25.29 $/year
Annual commercial energy cost 100.74 $/year 91.98 $/year
Typical power consumption 93.44W 85.31W

bus

Architecture QPI QPI
Number of links 3 1
Data rate 96,000 MB/s 23,464 MB/s
Transfer rate 8,000 MT/s 5,860 MT/s
Clock speed 4,000 MHz 2,930 MHz
Intel Xeon E7-4850 v3
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Intel Xeon E7-4820
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