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Differences What are the advantages of each

Front view of Intel Xeon E7-4809 v2

Reasons to consider the
Intel Xeon E7-4809 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 12 MB More than 2x 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 1.9 GHz More than 20% higher clock speed
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 threads 20 vs 12 8 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 E7-4809 v2  vs E5-2650 v3 

clock speed

L3 cache

Specifications Full list of technical specs

summary

Xeon E7-4809 v2  vs
E5-2650 v3 
Clock speed 1.9 GHz 2.3 GHz
Cores Hexa core Deca core
Is unlocked No Yes

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
AES
AVX
AVX 2.0
Supports dynamic frequency scaling No Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 34,133.32 MB/s 6,400 MB/s
Maximum memory size 1,572,864 MB 786,432 MB

details

Xeon E7-4809 v2  vs
E5-2650 v3 
Architecture x86-64 x86-64
Threads 12 20
L3 cache 12 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

bus

Architecture QPI QPI
Number of links 3 2
Data rate 76,800 MB/s 76,800 MB/s
Transfer rate 6,400 MT/s 9,600 MT/s
Clock speed 3,200 MHz 4,800 MHz
Intel Xeon E7-4809 v2
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Intel Xeon E5-2650 v3
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