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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 newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 2.4 GHz vs 2.2 GHz Around 10% higher clock speed
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much better overclocked clock speed (Air) 3.75 GHz vs 2.2 GHz More than 70% better overclocked clock speed (Air)
More threads 8 vs 2 6 more threads
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Water) 4.33 GHz vs 2.2 GHz More than 95% better overclocked clock speed (Water)
Front view of AMD Turion II Neo N54H

Reasons to consider the
AMD Turion II Neo N54H

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Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much lower typical power consumption 20.31W vs 65W 3.2x lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much lower annual home energy cost 6.02 $/year vs 19.27 $/year 3.2x lower annual home energy cost
Much lower annual commercial energy cost 21.9 $/year vs 70.08 $/year 3.2x lower annual commercial energy cost

Features Key features of the Xeon E5620  vs Turion II Neo N54H 

clock speed

Xeon E5620
2.4 GHz

L2 cache

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
Turion II Neo N54H 
Clock speed 2.4 GHz 2.2 GHz
Cores Quad core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

bus

Clock speed 2,930 MHz 1,600 MHz

details

Xeon E5620  vs
Turion II Neo N54H 
Threads 8 2
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 1

overclocking

Overclocked clock speed 3.75 GHz 2.2 GHz
Overclocked clock speed (Water) 4.33 GHz 2.2 GHz
Overclocked clock speed (Air) 3.75 GHz 2.2 GHz

power consumption

TDP 80W 25W
Annual home energy cost 19.27 $/year 6.02 $/year
Annual commercial energy cost 70.08 $/year 21.9 $/year
Typical power consumption 65W 20.31W
Intel Xeon E5620
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AMD Turion II Neo N54H
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