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Differences What are the advantages of each

Front view of Intel Xeon 5600 X5698

Reasons to consider the
Intel Xeon 5600 X5698

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Much higher clock speed 4.4 GHz vs 0.6 GHz More than 7.2x higher clock speed
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better overclocked clock speed (Air) 4.66 GHz vs 0.6 GHz More than 7.8x better overclocked clock speed (Air)
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much better overclocked clock speed (Water) 4.4 GHz vs 0.6 GHz More than 7.2x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Newer Feb, 2011 vs Sep, 2010 Release date 5 months later
Front view of Intel Atom E620

Reasons to consider the
Intel Atom E620

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Much lower typical power consumption 2.68W vs 105.63W 39.4x lower typical power consumption
Much lower annual home energy cost 0.79 $/year vs 31.32 $/year 39.4x lower annual home energy cost
Much lower annual commercial energy cost 2.89 $/year vs 113.88 $/year 39.4x lower annual commercial energy cost

Features Key features of the Xeon 5600 X5698  vs Atom E620 

clock speed

Xeon 5600 X5698
4.4 GHz
Atom E620
0.6 GHz

L2 cache

overclocked clock speed (air)

Xeon 5600 X5698
4.66 GHz
Atom E620
0.6 GHz

overclocked clock speed (water)

Xeon 5600 X5698
4.4 GHz
Atom E620
0.6 GHz

TDP

Specifications Full list of technical specs

summary

Xeon 5600 X5698  vs
Atom E620 
Clock speed 4.4 GHz 0.6 GHz
Cores Dual core Single core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

bus

Architecture QPI FSB
Number of links 2 1

details

Xeon 5600 X5698  vs
Atom E620 
Threads 4 2
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 1

overclocking

Overclocked clock speed 4.66 GHz 0.6 GHz
Overclocked clock speed (Water) 4.4 GHz 0.6 GHz
Overclocked clock speed (Air) 4.66 GHz 0.6 GHz

power consumption

TDP 130W 3.3W
Annual home energy cost 31.32 $/year 0.79 $/year
Annual commercial energy cost 113.88 $/year 2.89 $/year
Typical power consumption 105.63W 2.68W
Intel Xeon 5600 X5698
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Intel Atom E620
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