It isn't just about power phases; you could have a 48-12 power-phase, but crappy VRMs, and be no better than a 4-1 power-phase withfantastic VRMs. I would get the Gigabyte UD5 990fx, or Asrock Extreme9. The lower-end Asrock boards are rather crappy, but the Extreme9 is pretty great. Stay away from SMI 990fx boards, by the way. Their Z77 boards are fantatsic, but not their AM3+ boards :|
pci-e 3.0 vs 2.0? no advantages at the moment its more next gen ready there isent a card that can fully use pci-e 2.0 yet ( you allso need a chip thats ready for it and off the top of my head i dont know if that chip is one of them)
The Gigabyte boards are outstanding. I have the 990FXA-UD3, and it oc'd my 8350 quite nicely. Brennan is right - the quality of the vrm's does matter, but you do also need a decent power phase for the 8350. It chomps through power.
Ah okay thanks for the information. You mentioned VRM's earlier but I have no idea what it's for tbh. I'm just now getting into building a PC and I really want to learn more about anything as much as I can. If you feel like giving a brief rundown I would appreciate it.
The ASRock > 990FX Extreme9 and the 990FX gigabyte mobos have very strong VRMs for overclocking (ive seen a 8Ghz over clock on a 990FX Extreme9 ...but this was obviously on cpu liquid nitrogen cooling)