Phenom not underclocking with Cool-n-Quiet enabled

[thilanliyan]

I've just started to use the Phenom 9850 I have and at stock it used to underclock and undervolt in Windows Vista and I had a "processor power management" option when I change the power settings in the control panel.

Now that I've overclocked it the option is gone and it no longer underclocks and undervolts it. Anyone know what the issue is?

 

[VirtualLarry]

Sounds like the BIOS is disabling CnQ once you overclock.

 

[thilanliyan]

Anyone know a way around this? I have Cool-n-Quiet enabled in the BIOS but in Windows it does nothing.

 

[DrBombcrater]

CnQ doesn't work if you change the CPU's multiplier (at lest it never has done on my 9850).

 

[thilanliyan]

Originally posted by: DrBombcrater
CnQ doesn't work if you change the CPU's multiplier (at lest it never has done on my 9850).

Daaaamn...what the heck. It doesn't work if you change it in BIOS or in Windows with AOD?

 

[zerogear]

It should be able to if you left the multiplier alone, if you changed the multiplier then the downclock will be disabled. So if you overclock, try just overclocking with FSB

 

[thilanliyan]

Thanks for the advice. How far can you push the fsb usually with the AM2 motherboards?

 

[OCedHrt]

Originally posted by: DrBombcrater
CnQ doesn't work if you change the CPU's multiplier (at lest it never has done on my 9850).

I think that depends on bios, as mine works fine.

 

[thilanliyan]

Originally posted by: OCedHrt

Originally posted by: DrBombcrater
CnQ doesn't work if you change the CPU's multiplier (at lest it never has done on my 9850).

I think that depends on bios, as mine works fine.

Which motherboard and CPU do you have? Maybe it doesn't work on Phenoms?

 

[Rhoxed]

i believe there is a windows driver to help this

 

[thilanliyan]

Originally posted by: Rhoxed
i believe there is a windows driver to help this

There is...but once I overclock I lose the option in Windows Power Management.