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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 6 MB Around 35% 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
More threads 4 vs 2 Twice as many threads
Front view of Intel Core2 Duo E8435

Reasons to consider the
Intel Core2 Duo E8435

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Significantly higher clock speed 3.07 GHz vs 2.13 GHz Around 45% higher clock speed
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache per core 3 MB/core vs 2 MB/core 50% more l2 cache per core
Better overclocked clock speed (Air) 3.4 GHz vs 2.72 GHz Around 25% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 3.07 GHz vs 2.13 GHz Around 45% better overclocked clock speed (Water)

Features Key features of the Core2 Quad Q6400  vs Duo E8435 

clock speed

Core2 Quad Q6400
2.13 GHz
Core2 Duo E8435
3.07 GHz

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Core2 Quad Q6400
2.13 GHz
Core2 Duo E8435
3.07 GHz

Specifications Full list of technical specs

summary

Core2 Quad Q6400  vs
Duo E8435 
Clock speed 2.13 GHz 3.07 GHz
Cores Quad core Dual core
Socket type
LGA 775
P

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3

bus

Clock speed 1,066 MHz 1,066 MHz

details

Core2 Quad Q6400  vs
Duo E8435 
Threads 4 2
L2 cache 8 MB 6 MB
L2 cache per core 2 MB/core 3 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.72 GHz 3.4 GHz
Overclocked clock speed (Water) 2.13 GHz 3.07 GHz
Overclocked clock speed (Air) 2.72 GHz 3.4 GHz

power consumption

Typical power consumption N/A N/A
Intel Core2 Quad Q6400
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Intel Core2 Duo E8435
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