does anyone know if the "ASUS Sabertooth X79 LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 ATX Intel Motherboard" is compatable with the "EVGA GeForce GTX 660 SUPERCLOCKED 2048MB GDDR5 DVI HDMI DP Graphics Card 02G-P4-2662-KR"?
More about :graphics card motherboard comparability question
Like suggested in your other thread, get a Seasonic or Corsair PSU (or other top quality brand). Skimping on your PSU with high-end components can be disasterous. Get at least 500w (for a single GPU). If you plan for Crossfire or SLI, consider a 750w or stronger PSU.
If it's for gaming, yes, you're better off spending less with lga 1155 and more money on the gpu.
But for the question either boards lga 2011 or lga 1155 is compatible with any pcie 3.0 card, pcie 3.0 is backwards compatible with previous pcie.
A decent psu within 500-600W will do, look if you can get from the brands mentioned in that thread.