Originally Posted by sailor
Relatively Idle (after warming up an hour on A/C mains), sufing the net, e-mail, etc.:
Immediately after pressing Alt-tab while nVidia Temperature consol is up under the game (UT2004 all max graphics settings with minor overclocking 387/633 - 9% frame rate increase, minor artifacting only on rare occasions, temperatures taken when artifacting)
GPU: 98-100C (drops under 90C in under half a second, under 84C in two seconds, under 75C in ten seconds)
During 100% Hard Drive Load (after 20 minutes): Defrag and/or surface scan, data erasure, or other disk intensive processes:
HD: 58-62C (only above 60C when A/C was out, and ambient room temperature was higher)
During dual 100% CPU load (HT):
Raising your laptop can have a tremendous impact on the temperatures of the unit. I use a specially designated piece of cardboard (4-ply with center cutout by two-ply) while using it on my lap. It does three things distribute the weight, insulate my lap from the heat, and raises the underside clearance of the air intakes roughly the height of a CD case for better circulation.
Also ambient temperature has a lot to do with the cooling capacity of the laptop too. Normally I work with it in an Air Conditioned environment, when the A/C failed, I noticed my notebook operating about 10C warmer in all three areas, but the ambient temperature was also about 7C warmer.
Also when placing the notebook on top of a paper desk calendar, I noticed the fans running one step faster and slightly elevated temps, so a small amount of clearance change makes a big difference.
From my previous post you can see all of my maxed out temperatures.
Since you took off the heat sink on your lappy, it is very important to make sure you reattach it properly, look for some kind of silver paste previously mention in this thread of the forum. (look back several months in this thread)
You also noted that your CPU clock speed dropped, this is normal in overheating conditions, it is a self-preservation mechanism (it shouldn't get that hot in the first place) that cools the CPU. If it still continues to rise, it should shut-down. I have seen neither in my case, but I am running a 3.0GHz processor.
It sounds like you have a cooling issue that you need to address, one user even used an aluminum cooling pad under his unit (look towards the beginning of the thread 1st half of 2004) with built in circulation fans.