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Why wont my CPU voltage/multiplier drop?

Centauri

Centauri

Golden Member
Upon booting, I can let my system idle out for an hour and it'll still hold above 1.3v and run at full clock speed. The only thing I've seen that gets both to drop is running the system at full load for a while, like during a stress test, and then closing everything down to idle.

Any idea why this would be happening? Because I know when I initially built the system, the CPU would idle out almost immediately after boot if I let it.

Thanks.
 
The CPU voltage is also a good bit higher than I have it set to in the BIOS (running at 1.35~ vs my 1.287 setting). And Cool 'n Quiet is definitely enabled.
 
Changing the Windows performance profile had no effect, even after a reboot. As for setting the vcore in the BIOS, I've been undervolting for months and the system only recently started using a voltage higher than the one I'm setting and refusing to throttle down during system idle.
 
Windows performance profile > processor power management > Minimun processor state

If your minimun processor state setting is at 100% lower it.

On some intel mb if EIST{speed step} is off then the processor power management wont show up.
 
Where do I find the Windows Performance Profile? I can't find anything that gets as specific as processor state control.

Also, I went back into the BIOS and set the CPU settings back to default. Not only did it not help, but I now know that my vcore is taking whatever the BIOS setting is and then going even higher - now it's running above 1.5v at idle according to AIDA and CPU-Z. Yet OverDrive still reports things as they are set in the BIOS. Though my electricity usage meter confirms that AIDA and CPU-Z are correct.
 
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Its located here:
power.png
 
Found it, thanks - though the processor's minimum state was already set to 5%. :\

So my problems still remain - voltages above and beyond the BIOS settings regardless of whether or not I'm setting them myself, and clock speeds that wont drop during idle.
 
Centauri said:
Where do I find the Windows Performance Profile? I can't find anything that gets as specific as processor state control.

Also, I went back into the BIOS and set the CPU settings back to default. Not only did it not help, but I now know that my vcore is taking whatever the BIOS setting is and then going even higher - now it's running above 1.5v at idle according to AIDA and CPU-Z. Yet OverDrive still reports things as they are set in the BIOS. Though my electricity usage meter confirms that AIDA and CPU-Z are correct.
Click to expand...

Ok, that's strange. Absolutely sure all bios settings are back at stock? Can you do something like 'load standard settings'? Sure there is not some program running in the background?
 
Yeah; loaded UEFI defaults and it hasn't fixed anything. And Task Manager shows that my CPU usage does indeed drop to 0, though the vcore keeps bouncing around regardless.

Also noticing that my fan wont throttle down either.

*sigh*
 
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Yeah, a few days ago.

Should I/can-I try reverting to a prior version? (I actually haven't liked the past few BIOS releases)
 
Yeah, that seems to have done the trick with the voltage. It'll drop down to 1.05v~ while idle again and it doesn't exceed my BIOS setting anymore under load.

But the clock speed still isn't dropping while idle? 😕
 
Unplug the PC, pull the battery from the motherboard, and reset the CMOS. Let it sit for a while, put the battery back in, and put the CMOS back to normal. Sometimes CMOS is stubborn.
 
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