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Differences What are the advantages of each

Front view of Intel Core2 Duo E8290

Reasons to consider the
Intel Core2 Duo E8290

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Much lower typical power consumption 52.81W vs 116.42W 2.2x lower typical power consumption
Much better performance per watt 1.82 pt/W vs 0.8 pt/W More than 2.2x better performance per watt
Much lower annual home energy cost 15.66 $/year vs 42.79 $/year 2.7x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 113.7 $/year Around 50% lower annual commercial energy cost
Front view of AMD Athlon II X2 255

Reasons to consider the
AMD Athlon II X2 255

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Higher clock speed 3.1 GHz vs 2.83 GHz Around 10% higher clock speed
Much better overclocked clock speed (Air) 3.8 GHz vs 2.83 GHz Around 35% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.93 GHz vs 2.83 GHz Around 40% better overclocked clock speed (Water)

Benchmarks Real world tests of Core2 Duo E8290 vs Athlon II X2 255

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8290  vs
Athlon II X2 255 
Clock speed 2.83 GHz 3.1 GHz
Cores Dual core Dual core
Socket type
LGA 775
AM3

features

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

bus

Clock speed 1,333 MHz 2,000 MHz

details

Core2 Duo E8290  vs
Athlon II X2 255 
Threads 2 2
L2 cache 6 MB 2 MB
L2 cache per core 3 MB/core 1 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.83 GHz 3.8 GHz
Overclocked clock speed (Water) 2.83 GHz 3.93 GHz
Overclocked clock speed (Air) 2.83 GHz 3.8 GHz

power consumption

TDP 65W 65W
Annual home energy cost 15.66 $/year 42.79 $/year
Annual commercial energy cost 56.94 $/year 113.7 $/year
Performance per watt 1.82 pt/W 0.8 pt/W
Typical power consumption 52.81W 116.42W
Intel Core2 Duo E8290
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AMD Athlon II X2 255
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