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Differences What are the advantages of each

Front view of Intel Xeon E5620

Reasons to consider the
Intel Xeon E5620

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Much higher clock speed 2.4 GHz vs 1.8 GHz Around 35% higher clock speed
Much better overclocked clock speed (Air) 3.75 GHz vs 1.8 GHz More than 2x better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.33 GHz vs 1.8 GHz Around 2.5x better overclocked clock speed (Water)
Front view of Intel Xeon E5-2408L v3

Reasons to consider the
Intel Xeon E5-2408L v3

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Significantly lower typical power consumption 36.56W vs 65W Around 45% lower typical power consumption
Supports more RAM 393,216 MB vs 294,912 MB Supports around 35% more RAM
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Jan, 2015 vs Mar, 2010 Release date over 4 years later
Significantly lower annual commercial energy cost 39.42 $/year vs 70.08 $/year Around 45% lower annual commercial energy cost
Significantly lower annual home energy cost 10.84 $/year vs 19.27 $/year Around 45% lower annual home energy cost

Features Key features of the Xeon E5620  vs E5-2408L v3 

clock speed

Xeon E5620
2.4 GHz

overclocked clock speed (air)

Xeon E5620
3.75 GHz

overclocked clock speed (water)

Xeon E5620
4.33 GHz

Specifications Full list of technical specs

summary

Xeon E5620  vs
E5-2408L v3 
Clock speed 2.4 GHz 1.8 GHz
Cores Quad core Quad core

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 80W 45W
Annual home energy cost 19.27 $/year 10.84 $/year
Annual commercial energy cost 70.08 $/year 39.42 $/year
Typical power consumption 65W 36.56W

bus

Architecture QPI QPI
Number of links 2 1
Data rate 46,928 MB/s 25,600 MB/s
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz

details

Xeon E5620  vs
E5-2408L v3 
Architecture x86-64 x86-64
Threads 8 8
Manufacture process 32 nm 22 nm
Max CPUs 2 2

overclocking

Overclocked clock speed 3.75 GHz 1.8 GHz
Overclocked clock speed (Water) 4.33 GHz 1.8 GHz
Overclocked clock speed (Air) 3.75 GHz 1.8 GHz

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
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Triple Channel Triple Channel
Supports ECC Yes Yes
Maximum bandwidth 25,599.99 MB/s 38,400 MB/s
Maximum memory size 294,912 MB 393,216 MB
Intel Xeon E5620
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Intel Xeon E5-2408L v3
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