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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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Supports more RAM 1,572,864 MB vs 786,432 MB Supports 2x more RAM
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Front view of Intel Xeon E5-2650 v3

Reasons to consider the
Intel Xeon E5-2650 v3

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Much more l3 cache 25 MB vs 16 MB More than 55% more l3 cache; more data can be stored in the l3 cache for quick access later
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much higher clock speed 2.3 GHz vs 2 GHz Around 15% higher clock speed
Significantly higher turbo clock speed 3 GHz vs 2.5 GHz 20% higher turbo clock speed
More threads 20 vs 16 4 more threads
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core

Features Key features of the Xeon E7-4820 v2  vs E5-2650 v3 

clock speed

turbo clock speed

L3 cache

Specifications Full list of technical specs


Xeon E7-4820 v2  vs
E5-2650 v3 
Clock speed 2 GHz 2.3 GHz
Turbo clock speed 2.5 GHz 3 GHz
Cores Octa core Deca core
Is unlocked No Yes


Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
AVX 2.0
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 42,666.64 MB/s 6,400 MB/s
Maximum memory size 1,572,864 MB 786,432 MB


Xeon E7-4820 v2  vs
E5-2650 v3 
Architecture x86-64 x86-64
Threads 16 20
L3 cache 16 MB 25 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 4 2
Operating temperature Unknown - 68°C Unknown - 78.9°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 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


Architecture QPI QPI
Number of links 3 2
Data rate 86,400 MB/s 76,800 MB/s
Transfer rate 7,200 MT/s 9,600 MT/s
Clock speed 3,600 MHz 4,800 MHz
Intel Xeon E7-4820 v2
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Intel Xeon E5-2650 v3
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