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Differences What are the advantages of each

Front view of Intel Xeon X5570

Reasons to consider the
Intel Xeon X5570

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Significantly higher clock speed 2.93 GHz vs 2.2 GHz Around 35% higher clock speed
Much better overclocked clock speed (Air) 3.75 GHz vs 2.2 GHz More than 70% better overclocked clock speed (Air)
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better overclocked clock speed (Water) 4.58 GHz vs 2.2 GHz More than 2x better overclocked clock speed (Water)
More threads 8 vs 6 2 more threads
Front view of AMD Opteron 41KX HE

Reasons to consider the
AMD Opteron 41KX HE

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Much more l2 cache 3 MB vs 1 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
More cores 6 vs 4 2 more cores; run more applications at once
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Newer Jun, 2010 vs Mar, 2009 Release date over 1 years later
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost

Features Key features of the Xeon X5570  vs Opteron 41KX HE 

clock speed

Xeon X5570
2.93 GHz
Opteron 41KX HE
2.2 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon X5570
3.75 GHz
Opteron 41KX HE
2.2 GHz

overclocked clock speed (water)

Xeon X5570
4.58 GHz
Opteron 41KX HE
2.2 GHz

Specifications Full list of technical specs

summary

Xeon X5570  vs
Opteron 41KX HE 
Clock speed 2.93 GHz 2.2 GHz
Cores Quad core Hexa core
Socket type
LGA 1366
C32

features

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

bus

Architecture QPI HyperTransport 3.0
Clock speed 3,200 MHz 2,200 MHz

details

Xeon X5570  vs
Opteron 41KX HE 
Threads 8 6
L2 cache 1 MB 3 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 2 2
Clock multiplier 22 11
Voltage range 0.75 - 1.35V 1.19 - UnknownV

overclocking

Overclocked clock speed 3.75 GHz 2.2 GHz
Overclocked clock speed (Water) 4.58 GHz 2.2 GHz
Overclocked clock speed (Air) 3.75 GHz 2.2 GHz

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Typical power consumption 77.19W 52.81W
Intel Xeon X5570
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AMD Opteron 41KX HE
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