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Differences What are the advantages of each

Front view of Intel Core2 Quad Q9400S

Reasons to consider the
Intel Core2 Quad Q9400S

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Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher Maximum operating temperature 76.3 °C vs 62.2 °C Around 25% higher Maximum operating temperature
Much lower typical power consumption 52.81W vs 85.31W Around 40% lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower annual commercial energy cost 56.94 $/year vs 91.98 $/year Around 40% lower annual commercial energy cost
Much lower annual home energy cost 15.66 $/year vs 25.29 $/year Around 40% lower annual home energy cost
Newer Jan, 2009 vs Jul, 2007 Release date over 1 years later
Front view of Intel Core2 Quad Q6700

Reasons to consider the
Intel Core2 Quad Q6700

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Much better overclocked clock speed (Air) 3.65 GHz vs 2.67 GHz More than 35% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.7 GHz vs 2.67 GHz Around 40% better overclocked clock speed (Water)

Features Key features of the Core2 Quad Q9400S  vs Q6700 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Core2 Quad Q9400S  vs
Q6700 
Clock speed 2.66 GHz 2.66 GHz
Cores Quad core Quad core
Socket type
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 105W
Annual home energy cost 15.66 $/year 25.29 $/year
Annual commercial energy cost 56.94 $/year 91.98 $/year
Typical power consumption 52.81W 85.31W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,333 MHz 1,066 MHz

details

Core2 Quad Q9400S  vs
Q6700 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 6 MB 8 MB
L2 cache per core 1.5 MB/core 2 MB/core
Manufacture process 45 nm 65 nm
Transistor count 456,000,000 582,000,000
Max CPUs 1 1
Clock multiplier 8 10
Voltage range 0.85 - 1.36V 0.85 - 1.5V
Operating temperature Unknown - 76.3°C Unknown - 62.2°C

overclocking

Overclocked clock speed 2.67 GHz 3.65 GHz
Overclocked clock speed (Water) 2.67 GHz 3.7 GHz
Overclocked clock speed (Air) 2.67 GHz 3.65 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
Intel Core2 Quad Q9400S
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Intel Core2 Quad Q6700
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