Gosh! My Power Supply is 1200Watts CoollerMaster-
You got one as mine?...and you have problems? as I understood.
Back to the shop...
BTW I just come back from the link you gave. Also went to NVIDIA site and checked in their list of cards and compatible PS fro a Sli Mode.
YES. Mine Is in the list.
I'm sorry but I guess, unfortunelly can't point out- it's a matter of drivers.

I received that system in boxes from the internet, decide to send it to specialized shop to assembled it.
Probably the big mistake. They never do make a clean bussines.
I mean that if I KNEW HOW TO CONFIGURE THAT CP from Nvidia - I bet all will right.
Just don't know what to do there too many tabs and too many ..too many all..
Just run the nTune today- the short one. I need to try while in SLI to make the long one 3 hours..got to find time for that. During the night I try but wont continue after rebbot...so I got to be here in front of it.

"'you shut up!  or I'll bring democracy to your country! "
Cris Galvão aka Softcris  - www.crisgalvao.com
(or softcris, SoftCris)
Rendering since 1997 and
at Renderosity since 1999.
OS Win 8.1     64 bit