So... 1200w PSU's costing $239 got you down?

Wish you could get 2 600w PSU's and do the same thing?

Maybe a 300w for the system and 900w your dual 6990s and save some money.

http://youtu.be/WsWdOMbQF94

Yes you need 2 (or more) Power cords... but it's an alternative to the dual PSU 24pin adapters from cablesaurus.

Or if you're like me and you have a crap ton of 300-400 watt PSU's... put them to work.