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Differences What are the advantages of each

Front view of Intel Core2 Quad Q6400

Reasons to consider the
Intel Core2 Quad Q6400

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Much more l2 cache 8 MB vs 0.5 MB 16x 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 2 MB/core vs 0.25 MB/core 8x 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 2.13 GHz Around 55% higher clock speed
Much newer manufacturing process 22 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 3.43 GHz vs 2.72 GHz More than 25% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.46 GHz vs 2.13 GHz More than 60% better overclocked clock speed (Water)
Newer Sep, 2012 vs Jan, 2007 Release date over 5 years later

Features Key features of the Core2 Quad Q6400  vs Core i3 3220 

clock speed

Core2 Quad Q6400
2.13 GHz
Core i3 3220
3.3 GHz

L2 cache

overclocked clock speed (air)

Core2 Quad Q6400
2.72 GHz
Core i3 3220
3.43 GHz

overclocked clock speed (water)

Core2 Quad Q6400
2.13 GHz
Core i3 3220
3.46 GHz

Specifications Full list of technical specs

summary

Core2 Quad Q6400  vs
Core i3 3220 
Clock speed 2.13 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 Q6400  vs
Core i3 3220 
Threads 4 4
L2 cache 8 MB 0.5 MB
L2 cache per core 2 MB/core 0.25 MB/core
Manufacture process 65 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.72 GHz 3.43 GHz
Overclocked clock speed (Water) 2.13 GHz 3.46 GHz
Overclocked clock speed (Air) 2.72 GHz 3.43 GHz

power consumption

Typical power consumption N/A 44.69W
Intel Core2 Quad Q6400
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Intel Core i3 3220
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