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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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Much more l3 cache 16 MB vs 12 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
More l2 cache 2 MB vs 1.5 MB Around 35% more l2 cache; more data can be stored in the l2 cache for quick access later
Higher clock speed 2 GHz vs 1.9 GHz More than 5% higher clock speed
More threads 16 vs 12 4 more threads
Front view of Intel Xeon E7-4809 v2

Reasons to consider the
Intel Xeon E7-4809 v2

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CPUBoss is not aware of any important advantages of the E7-4809 v2 vs the E7-4820 v2.

Features Key features of the Xeon E7-4820 v2  vs E7-4809 v2 

clock speed

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E7-4820 v2  vs
E7-4809 v2 
Clock speed 2 GHz 1.9 GHz
Cores Octa core Hexa 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 No

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 3
Data rate 86,400 MB/s 76,800 MB/s
Transfer rate 7,200 MT/s 6,400 MT/s
Clock speed 3,600 MHz 3,200 MHz

details

Xeon E7-4820 v2  vs
E7-4809 v2 
Architecture x86-64 x86-64
Threads 16 12
L2 cache 2 MB 1.5 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 16 MB 12 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 4 4
Clock multiplier 20 19
Operating temperature Unknown - 68°C Unknown - 68°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
DDR3-1066
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 42,666.64 MB/s 34,133.32 MB/s
Maximum memory size 1,572,864 MB 1,572,864 MB
Intel Xeon E7-4820 v2
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Intel Xeon E7-4809 v2
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