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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 more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 0.5 MB/core 6x more l2 cache per core
Lower typical power consumption 52.81W vs 59.31W More than 10% lower typical power consumption
Lower annual commercial energy cost 56.94 $/year vs 63.95 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 15.66 $/year vs 17.59 $/year More than 10% lower annual home energy cost
Front view of Intel Core i5 660

Reasons to consider the
Intel Core i5 660

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Significantly higher clock speed 3.33 GHz vs 2.83 GHz Around 20% higher clock speed
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 4.28 GHz vs 2.83 GHz More than 50% better overclocked clock speed (Air)
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Water) 4.86 GHz vs 2.83 GHz More than 70% better overclocked clock speed (Water)

Benchmarks Real world tests of Core2 Duo E8290 vs Core i5 660

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8290  vs
Core i5 660 
Clock speed 2.83 GHz 3.33 GHz
Cores Dual core Dual core
Socket type
LGA 775
LGA 1156

features

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

details

Core2 Duo E8290  vs
Core i5 660 
Threads 2 4
L2 cache 6 MB 1 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.83 GHz 4.28 GHz
Overclocked clock speed (Water) 2.83 GHz 4.86 GHz
Overclocked clock speed (Air) 2.83 GHz 4.28 GHz

power consumption

TDP 65W 73W
Annual home energy cost 15.66 $/year 17.59 $/year
Annual commercial energy cost 56.94 $/year 63.95 $/year
Performance per watt 1.82 pt/W 9.23 pt/W
Typical power consumption 52.81W 59.31W
Intel Core2 Duo E8290
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Intel Core i5 660
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