Best AMD CPU [ No Price Limit ]

A 750watt or higher psu, prob silver or higher 80 plus certified for crossfire, and wattage coming from amds website. I prefer Corsair as u get quality with the price, so something more in the HX series, but the CX/TX/GS bronze series should be fine. EVGA makes some nice psus at gold certified, and XFX is pretty good, they got a 850 semi modular silver 80plus for $150 for same as last but gold and full modular for $160.

Also some would say that the X6 1100T is better than the fx line but with piledriver i believe the 8350 beats it out
 
Yeah. If you are cross-firing 7950s, you'll want to overclock that CPU. Even if you don't OC, you'll want more wattage under your belt. +1 to PSU