I'm wanting to buy this mobo http://www.newegg.com/Product/Product.aspx?Item=N82E16813130695&Tpk=N82E16813130695 but it say PCI Express 2.0 x16 1(running at x4) right now i have a gt 630 graphic card (I'm going to buy a better graphic card when I get the money) and I need to know if my graphic card will still work with the PCI Express 2.0 x16 1(running at x4), will the graphic card be slower or something, also the graphic card is compatible with the PCI-E 3.0 slot, so should I just put the card in that slot.