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Differences What are the advantages of each

Front view of Intel Xeon E7-4807

Reasons to consider the
Intel Xeon E7-4807

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Supports more RAM 2,097,152 MB vs 393,216 MB Supports more than 5.2x more RAM
Significantly more l3 cache 18 MB vs 15 MB 20% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
More l3 cache per core 3 MB/core vs 2.5 MB/core 20% more l3 cache per core
Front view of Intel Xeon E5-2620

Reasons to consider the
Intel Xeon E5-2620

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Higher clock speed 2 GHz vs 1.86 GHz Around 10% higher clock speed
Newer Mar, 2012 vs Apr, 2011 Release date 11 months later

Features Key features of the Xeon E7-4807  vs E5-2620 

clock speed

Xeon E7-4807
1.86 GHz
Xeon E5-2620
2 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E7-4807  vs
E5-2620 
Clock speed 1.86 GHz 2 GHz
Cores Hexa core Hexa core
Socket type
LGA 1567
LGA 2011

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 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Typical power consumption 77.19W 77.19W

bus

Architecture QPI QPI
Number of links 1 2
Data rate 19,200 MB/s 57,600 MB/s
Transfer rate 4,800 MT/s 7,200 MT/s
Clock speed 2,400 MHz 3,600 MHz

details

Xeon E7-4807  vs
E5-2620 
Architecture x86-64 x86-64
Threads 12 12
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 0.33 MB/core
L3 cache 18 MB 15 MB
L3 cache per core 3 MB/core 2.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 4 2
Clock multiplier 14 25
Operating temperature Unknown - 70°C Unknown - 77.4°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
DDR3
DDR3-800
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 393,216 MB
Intel Xeon E7-4807
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Intel Xeon E5-2620
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