I think it could still even handle a 8350. 125W (CPU) + 250W (GPU) = 375W, and that's based on TDP, which we're unlikely to ever reach in practice. We still have plenty of headroom for the rest of the system there, and the XFX is made well enough to handle the load.
Remember manufacturers suggest much higher capacity PSU's because some people use crap PSU's. You don't need a 750W unit if you use a good quality unit.