Are there any ways to control cpu speed in Windows? Im using a lappie with Intel Pentium M processsor.

While on Linux, I usually scale down to speed at 800 mhz when Im just doing normal surfing. I like it that way because the temperature will read 40-43 C. Im under utilising the processor but i feel that less heat = better. I will scale up the speed if Im doing some development stuff. For my level of work, 800 mhz will suffice though. lol

But in windows, Im not able to control the cpu speed. The only 2 modes available are when the lappie is running on battery or on A/C.

Are there ways to scale cpu speed in windows?

You are asking a Windows question in a Linux forum. Heretic!!! Blasphemer!!! Be gone with you!!!



Try asking your question in a Windows forum, wherever they may be. Or look at Microsoft's knowlege base. I know it sounds crazy but it just might work.

Windows questions are allowed in this forum. Remember, even Windows is a "non-Linux topic".
As there are probably lots of people dual-booting on their laptops this seems an entirely reasonable place to ask this question.

Hey!

Im praising Linux in this thread!

How do you change CPU speed in Linux, by the way? I've never tried that. Any help would be appreciated.

I believe it can only be done on mobile based processors (Correct me if im wrong though).

Im personally using 2.6 series kernel. Here's a screenshot of the config under CPU Scaling (CPU SCALING is found under ACPI options)

Experts, please correct me if there are mistakes.

http://img153.imageshack.us/img153/4636/compile0ke.jpg

Then recompile the kernel, load cpufreq_powersave, cpufreq_ondemand modules.

do a #cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
To see available speeds.

Then
#echo 800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
//indicates to run at 800mhz. Ensure that 800000 is available in scaling_available_frequencies !!

#echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
//let the cpu run @ 800

u can also echo 'ondemand' so that the cpu will adjust it's speed automatically.

To see what speed the cpu is running at the moment, you can download a K applet called CPUINFO 0.2

This is my understanding too. You need an Athlon xp-m or a Centrino.

Some new processors comes with better management of performance, heat and energy...

You may try changing the FSB on the BIOS or using "laptop" energy-saving mode. Either way I don't think Windows is *gentle* with system resources even at idle.