Hello! I am hooking up my haswell build with i7 4770 as the processor and asrock z87m extreme 4 as the mobo. The mobo supports pci express x16 3.0 port. I have a GT 420 graphics card (i do not play games) from my earlier rig but is works with pci express x16 2.0. Will my GT 420 graphics card work with the new asrock mobo?