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Differences What are the advantages of each

Front view of Intel Xeon E7-4820 v2

Reasons to consider the
Intel Xeon E7-4820 v2

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Higher turbo clock speed 2.5 GHz vs 2.27 GHz More than 10% higher turbo clock speed
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Feb, 2014 vs Apr, 2011 Release date over 2 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
More l3 cache 18 MB vs 16 MB Around 15% more l3 cache; more data can be stored in the l3 cache for quick access later
More l3 cache per core 2.25 MB/core vs 2 MB/core Around 15% more l3 cache per core

Features Key features of the Xeon E7-4820 v2  vs E7-4820 

clock speed

turbo clock speed

Xeon E7-4820 v2
2.5 GHz
Xeon E7-4820
2.27 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E7-4820 v2  vs
E7-4820 
Clock speed 2 GHz 2 GHz
Turbo clock speed 2.5 GHz 2.27 GHz
Cores Octa core Octa core
Socket type
LGA 2011
LGA 1567

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
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 105W 105W
Annual home energy cost 25.29 $/year 25.29 $/year
Annual commercial energy cost 91.98 $/year 91.98 $/year
Typical power consumption 85.31W 85.31W

bus

Architecture QPI QPI
Number of links 3 1
Data rate 86,400 MB/s 23,464 MB/s
Transfer rate 7,200 MT/s 5,860 MT/s
Clock speed 3,600 MHz 2,930 MHz

details

Xeon E7-4820 v2  vs
E7-4820 
Architecture x86-64 x86-64
Threads 16 16
L2 cache 2 MB 2 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 16 MB 18 MB
L3 cache per core 2 MB/core 2.25 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 4 4
Clock multiplier 20 15
Operating temperature Unknown - 68°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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3
DDR
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 42,666.64 MB/s 25,600 MB/s
Maximum memory size 1,572,864 MB 2,097,152 MB
Intel Xeon E7-4820 v2
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Intel Xeon E7-4820
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