300 watt Enlight. Actually the fans dont take that much juice. the 80mm take 2.6 watts each and the 50's take 1.6.
All kidding aside, i have talked to a guy that USES A/C. He has it mounted to the side of a full tower blowing in. have motherboard temps of 19F in southern California!!!!! That guy has a p3 1 gig @1.5, t-bird 1.2 @ 1.5 and a p4 1.5 @ 1.875.
All are stable and ran that way. He also makes his own Nvidia drivers and Bios for the KT7a abit board so he can get higher voltages.
Now that is what I call tweaking!!!!
633 Celeron @1055, Abit bx-133, 384 Kingmax pc 133 @ cas 2-2-2, ATI radeon 64 mb DDR 16 fans