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Differences What are the advantages of each

Front view of Intel Core i5 3230M

Reasons to consider the
Intel Core i5 3230M

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Much newer manufacturing process 22 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 28.44W vs 75.24W 2.6x lower typical power consumption
Much better performance per watt 12.42 pt/W vs 0.69 pt/W Around 18x better performance per watt
Much higher Maximum operating temperature 105 °C vs 67 °C More than 55% higher Maximum operating temperature
Newer Jan, 2013 vs Aug, 2005 Release date over 7 years later
Significantly better PassMark (Single core) score 1,583 vs 889 Around 80% better PassMark (Single core) score
Better PassMark score 3,989 vs 693 More than 5.8x 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
Much lower annual home energy cost 8.43 $/year vs 22.31 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 30.66 $/year vs 81.12 $/year 2.6x lower annual commercial energy cost
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
Higher clock speed 2.8 GHz vs 2.6 GHz Around 10% higher clock speed
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 Core i5 3230M vs Opteron 254

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 3230M  vs
Opteron 254 
Clock speed 2.6 GHz 2.8 GHz
Cores Dual core Single core
Socket type
rPGA 988B
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

Core i5 3230M  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 22 nm 90 nm
Max CPUs 1 2
Clock multiplier 26 14
Operating temperature Unknown - 105°C 0 - 67°C

power consumption

TDP 35W 92.6W
Annual home energy cost 8.43 $/year 22.31 $/year
Annual commercial energy cost 30.66 $/year 81.12 $/year
Performance per watt 12.42 pt/W 0.69 pt/W
Typical power consumption 28.44W 75.24W
Intel Core i5 3230M
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AMD Opteron 254
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