For those who have never tried to blow ALL the dust away from inside their computer, listen... I finally did it. With an airpressure-compressor (or what do you call them in english..) Anyway, it wasn´t even veeery dusty, but the avg cpu-temperature decreased from 105 to 93 F. Mobo from 87 to 79 F. This really made me understand somethings.... Recommended for everyone :)

That's great that it lowered your temp, but you should be careful doing that because sometimes you may be blowing the dust into places it shouldn't be. I use a vaccuum, even though it may not fit everywhere, it gets rid of the dust instead of blowing it around. Dell Dimension 4600i Windows XP Home v2002 SP2 Microsoft Office 2003 Pentium 4 @ 2.8GHz 512MB DDR RAM 40GB HD ...If my computer's not happy, I'm not happy.

Eh, I heard that vacuums are no good because static they create static electricity in the air (or something) and because they can suck up jumpers.

Yeah Matt, its not to be done in your own room f.ex.... I had unlimited amount of air to use and I was outside the house too. After those 10-15 minutes, I can guarantee you that there is no dust anywhere inside my comp :) Anyway, what could be a bad place for the dust to go into, in a computer with all the components attached on their slots?

Good point, I never thought about the jumpers, and the whole time I was more concerned about frying everything from static electricity on me. Never thought about the vac. Thanks, I'll remember that next time. Dell Dimension 4600i Windows XP Home v2002 SP2 Microsoft Office 2003 Pentium 4 @ 2.8GHz 512MB DDR RAM 40GB HD ...If my computer's not happy, I'm not happy.

I use 80+PSI compressed air all the time and have for years and have never had a single issue. Some really grungy ones simply do not get clean with can air or a vacuum. Jimi_l

Good,very good. See cleaning does help. But some sage advice from a friend of mine that runs a body shop. Air compressed by a compressor will contain water vapor. Use an inline drier and adjustable flow regulator. Because the first thing you see come out the nozzle is water. The next is clean air. Too much pressure can blow componets off the board and loosen up heat sinks. Plus over spin the fans. My rebuttal was at least he's trying to keep things clean. Just be careful... I may be crazy, but I'm not stupid...