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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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Higher clock speed 2.93 GHz vs 2.8 GHz Around 5% higher clock speed
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 (Air) 3.75 GHz vs 2.8 GHz Around 35% better overclocked clock speed (Air)
More threads 8 vs 4 Twice as many threads
Much better overclocked clock speed (Water) 4.58 GHz vs 2.8 GHz Around 65% better overclocked clock speed (Water)
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Front view of AMD Opteron 8387

Reasons to consider the
AMD Opteron 8387

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Much 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
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Lower typical power consumption 60.94W vs 77.19W More than 20% lower typical power consumption
Lower annual commercial energy cost 65.7 $/year vs 83.22 $/year More than 20% lower annual commercial energy cost
Lower annual home energy cost 18.07 $/year vs 22.89 $/year More than 20% lower annual home energy cost

Features Key features of the Xeon X5570  vs Opteron 8387 

clock speed

Xeon X5570
2.93 GHz
Opteron 8387
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon X5570
3.75 GHz
Opteron 8387
2.8 GHz

overclocked clock speed (water)

Xeon X5570
4.58 GHz
Opteron 8387
2.8 GHz

TDP

Specifications Full list of technical specs

summary

Xeon X5570  vs
Opteron 8387 
Clock speed 2.93 GHz 2.8 GHz
Cores Quad core Quad core
Socket type
LGA 1366
F

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
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 75W
Annual home energy cost 22.89 $/year 18.07 $/year
Annual commercial energy cost 83.22 $/year 65.7 $/year
Typical power consumption 77.19W 60.94W

bus

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

details

Xeon X5570  vs
Opteron 8387 
Threads 8 4
L2 cache 1 MB 2 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 1.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 2 8
Clock multiplier 22 14
Voltage range 0.75 - 1.35V 1.32 - UnknownV
Operating temperature Unknown - 75°C 0 - 55°C

overclocking

Overclocked clock speed 3.75 GHz 2.8 GHz
Overclocked clock speed (Water) 4.58 GHz 2.8 GHz
Overclocked clock speed (Air) 3.75 GHz 2.8 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
Intel Xeon X5570
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AMD Opteron 8387
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