I have a dell xps 8300 running pci x16, A06 bios, and currently a nvidia 750 TI gpu. The chipset is h67. are there any better graphics cards that I can use. I found out there were, but I am really not sure on the specifics. I would prefer a 900 series gpu but anything better than the 750 ti, that is worth it, is fine. The main problem I have, is the dell xps case, since the motherboard supposedly doesn't fit in any other cases. Please help me out!