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Cool'n' quiet dissapeared - how come?

  • CPUs
Last response: in CPUs
June 18, 2010 3:17:56 PM


I have built a HTPC based on a Phenom II 4X and based on Win 7.

In order to reduce heat/noise I also played with K10stat and was able to safely reduce Vid.

When playing, I realized that in most cases when the load was low the CPU switched to P-State III which equates to 4x 800MHz.
This is what Cool'n'quiet is all about, right?

Meanwhile I realized the the CPU seems "locked" to P-state 0 which equates to 4x 3.2GHz even at low loads which is a pure waste and creates noise.
I have checked the Bios settings and sure enough C'n'Q is activated.

What have I missed here?

Thank you for a useful hint


P.S. Thank you too for the patience as for you me question is probably trivial.

More about : cool quiet dissapeared

a c 257 à CPUs
June 18, 2010 4:36:54 PM

Is something on your system causing it to run at least one core at full load?
June 18, 2010 7:50:14 PM

Hi Hunter,

K10stat reports back to me that all four cores are running @ either 0% or 1% load.
Frequency is 3200MHz.

CPUID tells me that VID is 1.375V.

What isn't the CPU throttling down to 800 MHz then in which case 0.725V have prooven to be sufficient?

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a b à CPUs
June 19, 2010 9:37:02 PM

If the power mode in windows/controlpanel is set to enthusiast mode it won't power down.
a b à CPUs
June 19, 2010 10:14:25 PM

It is in the screensaver menu, click the bottom left tab in the screensaver menu, if it is on High Performance it will not allow for the C-n-Q to throttle the has to be on balanced or power saver
June 20, 2010 12:19:33 PM

@Roonj & Lowjack,

that did the trick thank you.

Any idea how to convince K10stat to start during boot up?


a b à CPUs
June 20, 2010 3:03:29 PM

Look under the preferences menu in the application to set it to start on boot-up..
June 24, 2010 8:35:38 PM

There is no preference menu to my knowledge.
K10stat needs to be started using the Win 7 Taskscheduler.
I have used the folloeing settings without success:
Name: K10stat
Trigger: Boot
Independent of user - not storing password
Program: k10stat.exe -loadprofile1 -nowindow

Anything I missed?

a b à CPUs
June 24, 2010 9:39:29 PM

Can't you enable it as a windows startup application?
a b à CPUs
June 25, 2010 4:41:57 PM

I know now that it doesn't have a preferance tab......Only thing I can think of is to download a utility like glarysoft and use it to make it open on start up