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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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Significantly higher clock speed 2.4 GHz vs 2.2 GHz Around 10% higher clock speed
Higher turbo clock speed 2.66 GHz vs 2.5 GHz More than 5% higher turbo clock speed
Much more l3 cache per core 3 MB/core vs 1.33 MB/core More than 2.2x more l3 cache per core
Front view of AMD Opteron 6230 HE

Reasons to consider the
AMD Opteron 6230 HE

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Much more l2 cache 12 MB vs 1 MB 12x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l3 cache 16 MB vs 12 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 12 vs 4 Three times as many cores; run more applications at once
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
More threads 12 vs 8 4 more threads
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration

Features Key features of the Xeon E5620  vs Opteron 6230 HE 

clock speed

Xeon E5620
2.4 GHz
Opteron 6230 HE
2.2 GHz

turbo clock speed

Xeon E5620
2.66 GHz
Opteron 6230 HE
2.5 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E5620  vs
Opteron 6230 HE 
Clock speed 2.4 GHz 2.2 GHz
Turbo clock speed 2.66 GHz 2.5 GHz
Cores Quad core Duodeca core
Socket type
LGA 1366
G34

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
Supplemental SSE3
AES

details

Xeon E5620  vs
Opteron 6230 HE 
Threads 8 12
L2 cache 1 MB 12 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 12 MB 16 MB
L3 cache per core 3 MB/core 1.33 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 4
Clock multiplier 18 15

power consumption

TDP 80W 85W
Annual home energy cost 19.27 $/year 20.48 $/year
Annual commercial energy cost 70.08 $/year 74.46 $/year
Typical power consumption 65W 69.06W

bus

Architecture QPI HyperTransport 3.0
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz
Intel Xeon E5620
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AMD Opteron 6230 HE
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