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Differences What are the advantages of each

Front view of Intel Core2 Quad Q9400

Reasons to consider the
Intel Core2 Quad Q9400

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Front view of Intel Core2 Quad Q6700

Reasons to consider the
Intel Core2 Quad Q6700

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CPUBoss is not aware of any important advantages of the Q6700 vs the Q9400.

Benchmarks Real world tests of Core2 Quad Q9400 vs Q6700

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Quad Q9400
114,000 MB/s
Core2 Quad Q6700
113,900 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Quad Q9400  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 95W 105W
Annual home energy cost 22.89 $/year 25.29 $/year
Annual commercial energy cost 83.22 $/year 91.98 $/year
Performance per watt 1.51 pt/W 1.2 pt/W
Typical power consumption 77.19W 85.31W

bus

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

details

Core2 Quad Q9400  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 - 71.4°C Unknown - 62.2°C

overclocking

Overclock popularity 34 18
Overclocked clock speed 3.54 GHz 3.65 GHz
Overclocked clock speed (Water) 4.15 GHz 3.7 GHz
Overclocked clock speed (Air) 3.54 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 Q9400
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Intel Core2 Quad Q6700
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