I have an eMachines T3508 running XP on 384 MB of RAM. The problem is that the cooling fan revs up and gets very noisy when I do something that stresses the CPU, like watching a video or visiting a website with Flash advertisements. It's so loud that I can't hear the audio track in some videos I watch.
What it's doing makes sense I guess - the more work the CPU does, the more heat it generates, and the more cooling it needs. But is there a way to make the fan work just a tad less?