It would give you space for a longer graphics card if you wanted. What case(s) and graphics card(s) are you looking into? For the really long cards you basically have to get a full sized tower. Most cards will probably fit in an ATX mid tower. I'd say a mid tower is probably what you want for that. Personal preference here, but I'd get one without a window since it would be a microATX motherboard in an ATX case. They look kinda funny like that.