Hey i have a ASUS M2 Crosshair AM2 NVIDIA nForce 590 SLI, and i know it is pcie x16 and not 2.0. I was wanting to get a new graphics card for the moment untill i could get a new mobo with pcie 2.o, just wanted to know if i put a pcie 2.0 graphics card in this mobo for now will it work, is it compatible?