If you do some heavy multi-tasking . . .

[Nomadicus]

I have a problem. I do a lot of compute intensive graphics. UnrealTournament3 map builds and 3dsmax rendering. Both peg all the cores of my quadcore at 100%. Trying to read email or web-browsing is next to impossible unless I manually lower and raise the priority.

This tool solves my problem: ProcessTamer - Mouser - Software - DonationCoder.com

I installed Process Tamer (per the free lic agreement), and now I can do these 10 minutes builds and simultaneously use 3dsmax or surf the web, etc. without trouble.

[Trooper110]

Guess it would be useful depending on what you're doing. Generally for what I do if I have a process that's taking up a lot of my CPU cycles it's something that I want running with priority though, so I can't see a personal use for myself. Nice find though.

[mapes]

Too bad windows doesn't have the ability to set the "nice" value on a process. Cool find