Few days ago, my old laptop, a 6 year old HP NX6125 with Turion ML28 1.6 processor was running very hot. I was doing a virus scan. No room Ac. Ran CPUID and it showed the processor was at over 74C. Tried to cool it down by pointing a electric fan directly at it. It lowered the temp a little but it was still too hot for me.

Went to CDRking and got a cheap notebook cooling pad. Not much help.

Then I remembered undervolting. Had this laptop undervolted before and it worked great. Forgot to do it when I last reformatted. What is undervolting? Undervolting is a process wherin you lower the voltage to the processor. Not all processors are created the saame. Most can work at a lower voltage than what the laptop manufacturer sets. Its kinda like overclocking but instead of making the processor run faster, you make it run at a lower voltage.

So i downloaded RMclock and Prime95. RMclock is a freeware that lets you undervolt. Prime95 is a freeware that will stress your computer, it will show any instability or weakness.

Ran RMclock. It showed that my laptop was set at to run at 1.35 vid or volts at 8x fid or 1.6ghz. Min was 1vid at 4x fid or 800mhz. I unchecked the options to run rmclock at start up. I adjusted the vid from 1.35 down a notch and ran prime95. It was stable. Lowered the vid again and retested. Did this all the way down to 1 volt at 8x fid. I then tried to lower it to .95 volts at 8x but got a reboot. Retested for over 30 mins at 100% cpu and os load at 1 volt. It was stable. Temp was holding at 60 to 61C. Thats a drop of over 12C and its hotter today, no AC, no cooling pad, no electric fan! And best of all its free.

I was able to lower my voltage by .4 volts or about 28.5% and my temp by 13C or by arund 18%

I'm now testing how low I can go with the 4x fid. So far its stable at .875 volts at 800 mhz. Now trying .85 volts. Its been 10 mins at .85 volts and temp is holding at 46 to 47C. Will update later.

RMclock will work with older processors. It will not work with the i series of processors. It also does not work with vista64.

Advantages of undervolting. Cooler running processor. Heat is your computers enemy. Since the processor runs cooler, the other components should also run cooler. Its safe. The worst things that can happen if you lower the voltage too much is you get reboots or BSOD. If it happens just increase the voltage. It can make your laptop last longer since its not as hot.