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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 2.2 GHz More than 40% higher clock speed
Much newer manufacturing process 32 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 1 3 more cores; run more applications at once
Much better performance per watt 12.06 pt/W vs 0.23 pt/W Around 53x better performance per watt
More threads 4 vs 1 3 more threads
Much better overclocked clock speed (Air) 3.49 GHz vs 3.02 GHz More than 15% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.1 GHz vs 1.8 GHz More than 70% better overclocked clock speed (Water)
Newer Apr, 2011 vs May, 2004 Release date over 6 years later
Slightly lower typical power consumption 65W vs 69.31W More than 5% lower typical power consumption
Slightly lower annual commercial energy cost 70.08 $/year vs 74.72 $/year More than 5% lower annual commercial energy cost
Slightly lower annual home energy cost 19.27 $/year vs 20.55 $/year More than 5% lower annual home energy cost
Front view of AMD Opteron 248

Reasons to consider the
AMD Opteron 248

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Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration

Benchmarks Real world tests of Xeon E3-1220 vs Opteron 248

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Xeon E3-1220  vs
Opteron 248 
Clock speed 3.1 GHz 2.2 GHz
Cores Quad core Single core
Socket type
LGA 1155
940

features

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

details

Xeon E3-1220  vs
Opteron 248 
Threads 4 1
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 130 nm
Max CPUs 1 2
Clock multiplier 31 11
Operating temperature Unknown - 69.1°C 0 - 71°C

overclocking

Overclocked clock speed 3.49 GHz 3.02 GHz
Overclocked clock speed (Water) 3.1 GHz 1.8 GHz
Overclocked clock speed (Air) 3.49 GHz 3.02 GHz

power consumption

TDP 80W 85.3W
Annual home energy cost 19.27 $/year 20.55 $/year
Annual commercial energy cost 70.08 $/year 74.72 $/year
Performance per watt 12.06 pt/W 0.23 pt/W
Typical power consumption 65W 69.31W
Intel Xeon E3-1220
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AMD Opteron 248
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