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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 lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Significantly higher Maximum operating temperature 76.3 °C vs 71.4 °C More than 5% higher Maximum operating temperature
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Front view of Intel Core2 Quad Q9400

Reasons to consider the
Intel Core2 Quad Q9400

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Much better overclocked clock speed (Air) 3.54 GHz vs 2.67 GHz Around 35% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.15 GHz vs 2.67 GHz More than 55% better overclocked clock speed (Water)

Features Key features of the Core2 Quad Q9400S  vs Q9400 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Core2 Quad Q9400S  vs
Q9400 
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 Yes
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 95W
Annual home energy cost 15.66 $/year 22.89 $/year
Annual commercial energy cost 56.94 $/year 83.22 $/year
Typical power consumption 52.81W 77.19W

bus

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

details

Core2 Quad Q9400S  vs
Q9400 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 6 MB 6 MB
L2 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 45 nm 45 nm
Transistor count 456,000,000 456,000,000
Max CPUs 1 1
Clock multiplier 8 8
Voltage range 0.85 - 1.36V 0.85 - 1.36V
Operating temperature Unknown - 76.3°C Unknown - 71.4°C

overclocking

Overclocked clock speed 2.67 GHz 3.54 GHz
Overclocked clock speed (Water) 2.67 GHz 4.15 GHz
Overclocked clock speed (Air) 2.67 GHz 3.54 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 Q9400
Report a correction

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