You are going to get the X1950 Pro eventually, right?
I measured my case and I have about a 1/2 inch to spare between my floppy bays and the back of the card . Good thing I don't have any hard drives installed there, or I wouldn't have any room.
I definitely plan to, YES. I want a card that will be able to FOLD as well as allow me to play some recent games at a decent level. I have to wait for it to be available however.