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Differences What are the advantages of each

Front view of Intel Core i5 3470

Reasons to consider the
Intel Core i5 3470

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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
Significantly higher clock speed 3.2 GHz vs 2 GHz More than 60% higher clock speed
Much better overclocked clock speed (Air) 3.67 GHz vs 2 GHz Around 85% better overclocked clock speed (Air)
Significantly better PassMark score 6,607 vs 1,083 More than 6x better PassMark score
Newer Jun, 2012 vs May, 2005 Release date over 7 years later
Significantly better performance per watt 4.41 pt/W vs 0.52 pt/W Around 8.5x better performance per watt
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Water) 4.09 GHz vs 2 GHz More than 2x better overclocked clock speed (Water)
More threads 4 vs 2 Twice as many threads
Front view of AMD Opteron 270

Reasons to consider the
AMD Opteron 270

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Significantly 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
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
Lower typical power consumption 69.06W vs 86.05W Around 20% lower typical power consumption
Much lower annual home energy cost 20.48 $/year vs 31.22 $/year Around 35% lower annual home energy cost
Lower annual commercial energy cost 74.46 $/year vs 84.62 $/year More than 10% lower annual commercial energy cost

Benchmarks Real world tests of Core i5 3470 vs Opteron 270

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Core i5 3470  vs
Opteron 270 
Clock speed 3.2 GHz 2 GHz
Cores Quad core Dual 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

Core i5 3470  vs
Opteron 270 
Threads 4 2
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 22 nm 90 nm
Max CPUs 1 2
Clock multiplier 32 10
Voltage range Unknown - 1.13V 1.2 - UnknownV
Operating temperature Unknown - 67.4°C 0 - 67°C

overclocking

Overclocked clock speed 3.67 GHz 2 GHz
Overclocked clock speed (Water) 4.09 GHz 2 GHz
Overclocked clock speed (Air) 3.67 GHz 2 GHz

power consumption

TDP 77W 85W
Annual home energy cost 31.22 $/year 20.48 $/year
Annual commercial energy cost 84.62 $/year 74.46 $/year
Performance per watt 4.41 pt/W 0.52 pt/W
Typical power consumption 86.05W 69.06W
Intel Core i5 3470
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AMD Opteron 270
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