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Differences What are the advantages of each

Front view of Intel Core2 Quad Q9450S

Reasons to consider the
Intel Core2 Quad Q9450S

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Much more l2 cache 12 MB vs 0.5 MB 24x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
Much more l2 cache per core 3 MB/core vs 0.25 MB/core 12x more l2 cache per core
Front view of Intel Core i3 3220

Reasons to consider the
Intel Core i3 3220

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Much higher clock speed 3.3 GHz vs 2.67 GHz Around 25% higher clock speed
Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 3.43 GHz vs 2.67 GHz Around 30% better overclocked clock speed (Air)
Lower typical power consumption 44.69W vs 52.81W More than 15% lower typical power consumption
Much better overclocked clock speed (Water) 3.46 GHz vs 2.67 GHz Around 30% better overclocked clock speed (Water)
Newer Sep, 2012 vs Jan, 2008 Release date over 4 years later
Lower annual home energy cost 13.25 $/year vs 15.66 $/year More than 15% lower annual home energy cost
Lower annual commercial energy cost 48.18 $/year vs 56.94 $/year More than 15% lower annual commercial energy cost

Features Key features of the Core2 Quad Q9450S  vs Core i3 3220 

clock speed

Core i3 3220
3.3 GHz

L2 cache

overclocked clock speed (air)

Core i3 3220
3.43 GHz

overclocked clock speed (water)

Core i3 3220
3.46 GHz

Specifications Full list of technical specs

summary

Core2 Quad Q9450S  vs
Core i3 3220 
Clock speed 2.67 GHz 3.3 GHz
Cores Quad core Dual core
Socket type
LGA 775
LGA 1155

features

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

details

Core2 Quad Q9450S  vs
Core i3 3220 
Threads 4 4
L2 cache 12 MB 0.5 MB
L2 cache per core 3 MB/core 0.25 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.67 GHz 3.43 GHz
Overclocked clock speed (Water) 2.67 GHz 3.46 GHz
Overclocked clock speed (Air) 2.67 GHz 3.43 GHz

power consumption

TDP 65W 55W
Annual home energy cost 15.66 $/year 13.25 $/year
Annual commercial energy cost 56.94 $/year 48.18 $/year
Typical power consumption 52.81W 44.69W
Intel Core2 Quad Q9450S
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Intel Core i3 3220
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