If a motherboard has an onboard video chipset, can you still install a graphics card into the PCI Express slot and use it? For example, if one were to purchase a motherboard with an ATI onboard video chipset, would it still be compatible with an Nvidia GTX 285? I think I need a new motherboard for under $100. I built my computer over 2 years ago and the motherboard had an Nvidia nForce 780i SLI chipset, but I can't seem to find any motherboard on newegg.com(where I generally shop for computer parts) that has this chipset. Any recommendations on a good, cheap mother board that can support 4 gig DDR2 RAM, Socket LGA 775, Intel Q9450 processor, and an Nvidia GTX 285 graphics card?