Hi guys, I'm wanting to build a new machine and have decided on a Phenom II X4 955 for my cpu. I would like to run a single GPU (with these mobos should i stick to radeon or is it ok to run nvidia on these boards?) and don't plan to crossfire. Which version chipset should I get and why? I can't seem to figure out which is best for me - gx, fx, ect. Thank you!