I have an office full of PCs, and the noise from various and sundry fans sometimes gets a little annoying. So I’m intrigued by this completely fanless PurePower Power Supply from Thermaltake.
The heatpipe with glowing copper fins for thermal dissipation looks pretty cool, too. (Or maybe it just looks hot. I’m not sure.) Anyway, at $150 retail this is pretty pricy.
Anyone tried one of these things?
Ed Bott 
Ed:
The Tech Report posted a review of 8 power supplies, including one that was fanless. It wasn’t the ThermalTake, but it might give you an idea of how it might work.
http://www.techreport.com/reviews/2004q4/psus/index.x?pg=1