Found this thing on ebay, 1300 watts via 110v or 1700 via 220v, oh and it's water cooled. They actually hold the buyer responsible for being able to provide enough power.
http://cgi.ebay.com/Koolance-1300W-Liquid-Cooled-SLI-Certified-Power-Supply_W0QQitemZ120317223031QQcmdZViewItem?hash=item120317223031&_trkparms=39%3A1|66%3A2|65%3A16|240%3A1318&_trksid=p3286.c0.m14
http://cgi.ebay.com/Koolance-1300W-Liquid-Cooled-SLI-Certified-Power-Supply_W0QQitemZ120317223031QQcmdZViewItem?hash=item120317223031&_trkparms=39%3A1|66%3A2|65%3A16|240%3A1318&_trksid=p3286.c0.m14