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Differences What are the advantages of each

Front view of Intel Xeon E3-1220

Reasons to consider the
Intel Xeon E3-1220

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Much higher clock speed 3.1 GHz vs 2.8 GHz More than 10% 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
Lower typical power consumption 65W vs 85.31W Around 25% lower typical power consumption
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better overclocked clock speed (Air) 3.49 GHz vs 3.29 GHz More than 5% better overclocked clock speed (Air)
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Significantly better overclocked clock speed (Water) 3.1 GHz vs 2.8 GHz More than 10% better overclocked clock speed (Water)
Lower annual commercial energy cost 70.08 $/year vs 91.98 $/year Around 25% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 25.29 $/year Around 25% lower annual home energy cost
Newer Apr, 2011 vs Jan, 2009 Release date over 2 years later
Front view of AMD Opteron 8386 SE

Reasons to consider the
AMD Opteron 8386 SE

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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 1 7 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

Features Key features of the Xeon E3-1220  vs Opteron 8386 SE 

clock speed

Xeon E3-1220
3.1 GHz
Opteron 8386 SE
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E3-1220
3.49 GHz
Opteron 8386 SE
3.29 GHz

overclocked clock speed (water)

Xeon E3-1220
3.1 GHz
Opteron 8386 SE
2.8 GHz

Specifications Full list of technical specs

summary

Xeon E3-1220  vs
Opteron 8386 SE 
Clock speed 3.1 GHz 2.8 GHz
Cores Quad core Quad core
Socket type
LGA 1155
F

features

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

power consumption

TDP 80W 105W
Annual home energy cost 19.27 $/year 25.29 $/year
Annual commercial energy cost 70.08 $/year 91.98 $/year
Typical power consumption 65W 85.31W

details

Xeon E3-1220  vs
Opteron 8386 SE 
Threads 4 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 32 nm 45 nm
Max CPUs 1 8
Clock multiplier 31 14

overclocking

Overclocked clock speed 3.49 GHz 3.29 GHz
Overclocked clock speed (Water) 3.1 GHz 2.8 GHz
Overclocked clock speed (Air) 3.49 GHz 3.29 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 E3-1220
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AMD Opteron 8386 SE
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