It's true, I'm using two 24v 120mm Panaflos in my
full tower, one as front intake and the other as rear exhaust. Very quiet at 12v, yet they still move a fair amount of air. I have them on a switch, when active they produce about a 6C drop. Only run them during the hottest part of the day during the summer months.
I have found that some 24v fans will not spin at 12v. I bought a bunch when an online electronics supplier had a sale. About half of them wouldn't run at the lower voltage.
Originally posted by: fell8
Yeah, use a Molex connector on the fan. 12V will usually run a 24V fan, albeit at a much reduced rate. Shouldn't pose much threat to your PS either.