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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 higher clock speed 2.66 GHz vs 1.86 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
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much higher Maximum operating temperature 76.3 °C vs 60.1 °C More than 25% higher Maximum operating temperature
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Newer Jan, 2009 vs Apr, 2007 Release date over 1 years later
Front view of Intel Core2 Duo E6320

Reasons to consider the
Intel Core2 Duo E6320

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Much better overclocked clock speed (Air) 3.11 GHz vs 2.67 GHz More than 15% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 3.17 GHz vs 2.67 GHz Around 20% better overclocked clock speed (Water)

Features Key features of the Core2 Quad Q9400S  vs Duo E6320 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Core2 Quad Q9400S  vs
Duo E6320 
Clock speed 2.66 GHz 1.86 GHz
Cores Quad core Dual 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 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Typical power consumption 52.81W 52.81W

bus

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

details

Core2 Quad Q9400S  vs
Duo E6320 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 6 MB 4 MB
L2 cache per core 1.5 MB/core 2 MB/core
Manufacture process 45 nm 65 nm
Transistor count 456,000,000 291,000,000
Max CPUs 1 1
Clock multiplier 8 7
Voltage range 0.85 - 1.36V 0.85 - 1.5V
Operating temperature Unknown - 76.3°C Unknown - 60.1°C

overclocking

Overclocked clock speed 2.67 GHz 3.11 GHz
Overclocked clock speed (Water) 2.67 GHz 3.17 GHz
Overclocked clock speed (Air) 2.67 GHz 3.11 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 Duo E6320
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