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Multiplier Clock stuck on 6.0

Posted on 2008-06-26
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Last Modified: 2013-12-09
I'm running an Intel Core 2 Quad Q9300 processor on an ASUS P5E3 Delux motherboard. Using CPU-Z and Ai Suite.exe I've noticed that the multiplier clock is alway 6.0 and hence the CPU is running at 2.0Ghz instead of the factory 2.5Ghz. Even when I change it 7.5 in the Bios is reverts back to 6.0. Everynow and again when I first open both utilities (AiSuite.exe & CPU-Z) the clock multiplier is 7.5 and henze the CPU is running at 2.5GHz, but within in secons it reverts back to 6.0 and 2.0Ghz and stays there. I've attached a screen grab of the settings below.

I want to overclock to 3.0Ghz but to do that I need to increase the BUS speed from 333Mhz to 450Mhz, and it's starts to become unstable.

I've updated the latest AiSuite and have the latest BIOS settings runnging.

How do I fix this problem?


Screen-Grab-of-settings.JPG
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Question by:BPro2008
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9 Comments
 
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Expert Comment

by:Callandor
ID: 21877260
Do you have SpeedStep enabled in the BIOS?  It will slow down the cpu when it is not being used.  If you run a cpu-intensive program like Prime95 http://www.mersenne.org/freesoft.htm, it will run at full speed all the time.  Overclocking is not a guarantee and consider yourself fortunate if it works, as Intel does not promise that you can run any higher than the rated speed.
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Author Comment

by:BPro2008
ID: 21883832
I've turned Speedstep off and have set the multiplier clock to 7.5, but it appears my processor still only runs at 6.0 during idle. I've run a few games and have quickly checked the speed, which shows it is running at a 7.5 clock but then within seconds reverts back. Is there any other way to chance this automatically doing this. I realise the benefits of this happening, but I would just like to be able to find out if it's possible to keep it on 7.5, without running intensive tasks.
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Author Comment

by:BPro2008
ID: 21883851
Furthermore, these two sites have used almost exactly the same set up as mine, only they have used water cooling and a higher power supply and yet they manage to maintain the multiplier clock speed at 7.5
http://www.xbitlabs.com/articles/cpu/display/core2quad-q9300_6.html#sect0
http://www.legitreviews.com/article/695/12/
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LVL 69

Expert Comment

by:Callandor
ID: 21885638
Is there a BIOS setting that limits it to integer numbers?  See http://forums.extremeoverclocking.com/t293062.html+Q9300+multiplier&hl=en&ct=clnk&cd=3&gl=us
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Author Comment

by:BPro2008
ID: 21926205
Couldn't find any BIOS setting that limits it to integer numbers?
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LVL 69

Expert Comment

by:Callandor
ID: 21926827
Have a look at CrystalCPUID http://crystalmark.info/software/CrystalCPUID/index-e.html#Features and RMClock http://cpu.rightmark.org/products/rmclock.shtml - see if they offer you a way to lock the multiplier.  I would have thought disabling SpeedStep would have done the job, but you may have a rare defective cpu.
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Author Comment

by:BPro2008
ID: 22005607
Having trouble locating the Speedstep option in the BIOS now.
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Accepted Solution

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Callandor earned 250 total points
ID: 22007078
That's understandable - it's called the C1E control: http://www.neoseeker.com/Articles/Hardware/Reviews/asus_p5e3_deluxe/5.html
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Author Comment

by:BPro2008
ID: 22027236
Yep all good, thanks a million!
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