CPUBoss Review Our evaluation of Q9400 vs Q6600 among desktop CPUs (over 75W)

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

3.9

CPUBoss Score

Combination of all six facets

Winner
Intel Core2 Quad Q9400 

CPUBoss recommends the Intel Core2 Quad Q9400  based on its .

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VS

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 Q6600

Reasons to consider the
Intel Core2 Quad Q6600

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CPUBoss is not aware of any important advantages of the Q6600 vs the Q9400.

Benchmarks Real world tests of Core2 Quad Q9400 vs Q6600

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 Q6600
102,800 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
Q6600 
Clock speed 2.66 GHz 2.4 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 1.19 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
Q6600 
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 9
Voltage range 0.85 - 1.36V 0.85 - 1.5V
Operating temperature Unknown - 71.4°C Unknown - 62.2°C

overclocking

Overclock popularity 34 278
Overclocked clock speed 3.54 GHz 3.52 GHz
Overclocked clock speed (Water) 4.16 GHz 3.6 GHz
Overclocked clock speed (Air) 3.54 GHz 3.52 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 Q6600
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Comments

Showing 4 comments.
also the q9400 supports sse4.1 where the q6600 does not.
reason the Q6600 i more popular is because it can be used in more or less all the Nforce based motherboard while the 9xxx series the suporting motherboards with nforce are very limited. reason var that intel far long before knew what changes the 9xxx series would get but did not inform Nvidia a shit about it. (and right after the 1366 socket came out and Nvidia was "banned" from making chipsets for it)
I'd go with the q9400 for the following reasons: higher benchmarks, higher bus clock speed, higher core clock speed, lower power consumption and a higher maximum operating temp that makes it's easier to overclock.
Could anyone tell me which one would be better for battlefield 4 mainly , i've found two of those the q9400 for the 25€ and the q6600 for ~35-50€. But the price should not be the main issue. I see that in benchmarks the q9400 is better ,but q6600 seems more popular for some reason, is l2 cache size gonna make a huge difference? My power supply is cx400 so that may come in handy with q9400?
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