• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

Windows OS Processor Power Management

K

kooki

Weaksauce
Joined
May 15, 2013
Messages
98
Hello, I just wanted to ask if anyone knows whether the "Maximum processor state" option is a reliable method to force throttle a CPU for the purpose of lowering its overall power consumption.

On Windows OS the setting can be found under Power Options > Advanced Settingss > Provessor Power Management > Maximum processor state.
 
Last edited:
This seems to work, just tried it on my laptop. With multiple applications opened, my CPU usage was about 30-50% as reported by windows, the fan was audible. Changed the setting to 10% on battery and unplugged it. Suddenly the load was going down to 9-20% and the fan got more quiet after a short while.

I guess what it does is change the management of processor time in such a way that the processor is never executing instructions longer than 0.1secs ever second.

This of course reduces the thermal output of the processor and its power consumption.
If you've got a good BIOS and a processor that allows it, it could make more sense to set the CPUs maximum TDP there, though. That will allow you to fine tune the power consumption better and will mean that other metrics of the CPU (maximum boost clock, boosting during multi-core usage) and stuff like this get adjusted by the hardware itself.

Using the Windows power management is an interesting way of doing things, though.
 
Yeah, I only tried Cinebench + OpenHardwareMonitor to see the power consumption / actual performance and they did match my expectations. (Though OpenHardwareMonitor is software based and I'm not sure about its accuracy).

By what I read somewhere on the web this option does changes the ranges of the "P-states" of the CPU, or whatever... I didn't read much through about it.

In my case, my mobo does not have any sort of features like this on the BIOS nor I can under-volt my CPU.

If it's reliable enough, one could buy the cheapest i3 or i5 and then limit, indirectly, the TDP without the need to buy the more expensive T variant CPU.
 
You must log in or register to reply here.
Back
Top