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Differences What are the advantages of each

Front view of Intel Core i3 2100

Reasons to consider the
Intel Core i3 2100

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Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 3.1 GHz vs 2.8 GHz More than 10% higher clock speed
Significantly better PassMark (Single core) score 1,583 vs 889 Around 80% better PassMark (Single core) score
Newer Jan, 2011 vs Aug, 2005 Release date over 5 years later
Better PassMark score 3,664 vs 693 More than 5.2x better PassMark score
More threads 4 vs 1 3 more threads
More cores 2 vs 1 Twice as many cores; run more applications at once
Better overclocked clock speed (Air) 3.23 GHz vs 3 GHz Around 10% better overclocked clock speed (Air)
Better performance per watt 1.41 pt/W vs 0.69 pt/W More than 2x better performance per watt
Better overclocked clock speed (Water) 3.23 GHz vs 2.8 GHz More than 15% better overclocked clock speed (Water)
Front view of AMD Opteron 254

Reasons to consider the
AMD Opteron 254

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More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Significantly lower typical power consumption 75.24W vs 98.28W Around 25% lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 22.31 $/year vs 37.88 $/year More than 40% lower annual home energy cost
Lower annual commercial energy cost 81.12 $/year vs 93.47 $/year Around 15% lower annual commercial energy cost

Benchmarks Real world tests of Core i3 2100 vs Opteron 254

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i3 2100  vs
Opteron 254 
Clock speed 3.1 GHz 2.8 GHz
Cores Dual 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
Supports dynamic frequency scaling Yes Yes

details

Core i3 2100  vs
Opteron 254 
Threads 4 1
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 1 2
Clock multiplier 31 14
Operating temperature Unknown - 69.1°C 0 - 67°C

overclocking

Overclocked clock speed 3.23 GHz 3 GHz
Overclocked clock speed (Water) 3.23 GHz 2.8 GHz
Overclocked clock speed (Air) 3.23 GHz 3 GHz

power consumption

TDP 65W 92.6W
Annual home energy cost 37.88 $/year 22.31 $/year
Annual commercial energy cost 93.47 $/year 81.12 $/year
Performance per watt 1.41 pt/W 0.69 pt/W
Typical power consumption 98.28W 75.24W
Intel Core i3 2100
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AMD Opteron 254
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