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Differences What are the advantages of each

Front view of Intel Xeon L5639

Reasons to consider the
Intel Xeon L5639

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Much more l3 cache 12 MB vs 1 MB 12x more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 6 vs 2 Three times as many cores; run more applications at once
More threads 12 vs 2 10 more threads
Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 3.46 GHz vs 2.8 GHz Around 25% better overclocked clock speed (Air)
Much more l3 cache per core 2 MB/core vs 0.5 MB/core 4x more l3 cache per core
Significantly lower typical power consumption 48.75W vs 77.19W More than 35% lower typical power consumption
Significantly lower annual commercial energy cost 52.56 $/year vs 83.22 $/year More than 35% lower annual commercial energy cost
Significantly lower annual home energy cost 14.45 $/year vs 22.89 $/year More than 35% lower annual home energy cost
Front view of AMD Opteron 8220

Reasons to consider the
AMD Opteron 8220

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Much higher clock speed 2.8 GHz vs 2.13 GHz More than 30% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Much better overclocked clock speed (Water) 2.8 GHz vs 2.13 GHz More than 30% better overclocked clock speed (Water)

Features Key features of the Xeon L5639  vs Opteron 8220 

clock speed

Xeon L5639
2.13 GHz
Opteron 8220
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon L5639
3.46 GHz
Opteron 8220
2.8 GHz

overclocked clock speed (water)

Xeon L5639
2.13 GHz
Opteron 8220
2.8 GHz

TDP

Specifications Full list of technical specs

summary

Xeon L5639  vs
Opteron 8220 
Clock speed 2.13 GHz 2.8 GHz
Cores Hexa core Dual core
Socket type
LGA 1366
F

features

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

details

Xeon L5639  vs
Opteron 8220 
Threads 12 2
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 12 MB 1 MB
L3 cache per core 2 MB/core 0.5 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 2 8

overclocking

Overclocked clock speed 3.46 GHz 2.8 GHz
Overclocked clock speed (Water) 2.13 GHz 2.8 GHz
Overclocked clock speed (Air) 3.46 GHz 2.8 GHz

power consumption

TDP 60W 95W
Annual home energy cost 14.45 $/year 22.89 $/year
Annual commercial energy cost 52.56 $/year 83.22 $/year
Typical power consumption 48.75W 77.19W
Intel Xeon L5639
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AMD Opteron 8220
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