any motherboard supporting PCI-Ex16 2.0 and above will be good enough,
if you are planning on doing SLI, than motherboard for intel CPU is best for it atm
for AMD mobo, Nvidia just allowed AMD to use their SLI technology, so if you are planning on doing make sure it'll support on motherboard before you buy it, i guess it'll be month or two before it's truly available and working without problems.