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Differences What are the advantages of each

Front view of Intel Xeon E7-4820

Reasons to consider the
Intel Xeon E7-4820

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Lower typical power consumption 85.31W vs 93.44W Around 10% lower typical power consumption
Lower annual home energy cost 25.29 $/year vs 27.7 $/year Around 10% lower annual home energy cost
Lower annual commercial energy cost 91.98 $/year vs 100.74 $/year Around 10% lower annual commercial energy cost
Front view of Intel E7-4809V4

Reasons to consider the
Intel E7-4809V4

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Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports more RAM 3,145,728 MB vs 2,097,152 MB Supports 50% more RAM
Newer Apr, 2016 vs Apr, 2011 Release date over 5 years later
Higher Maximum operating temperature 69 °C vs 64 °C Around 10% higher Maximum operating temperature

Features Key features of the Xeon E7-4820  vs E7-4809V4 

clock speed

Xeon E7-4820
2 GHz
E7-4809V4
2.1 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E7-4820  vs
E7-4809V4 
Clock speed 2 GHz 2.1 GHz
Cores Octa core 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
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
DDR3-1333
DDR3-1066
DDR3
DDR
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 42,666.64 MB/s
Maximum memory size 2,097,152 MB 3,145,728 MB

details

Xeon E7-4820  vs
E7-4809V4 
Architecture x86-64 x86-64
Threads 16 16
Manufacture process 32 nm 14 nm
Max CPUs 4 4
Operating temperature Unknown - 64°C Unknown - 69°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 105W 115W
Annual home energy cost 25.29 $/year 27.7 $/year
Annual commercial energy cost 91.98 $/year 100.74 $/year
Typical power consumption 85.31W 93.44W

bus

Architecture QPI FSB
Number of links 1 3
Transfer rate 5,860 MT/s 6,400 MT/s
Intel Xeon E7-4820
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Intel E7-4809V4
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