>Would you buy a computer that has a Silent mode button?
Intriguing question. Yes, I would. The fans on the computer I built are always running, regardless of its activity level (I tried setting on the intelligent fan manager thing in the BIOS, but it doesn't seem to help). I'd gladly have a button to turn the fans off and quarter its clock rate for times when I'm not doing intensive work, but I want it to be done in silence.