robbieduncan said:The latter is possible. I don't want a 7300. What I really want to be able to do is flash the card that I already have (a 7800GT). I may never be able to do that though.
For those worrying about price drops Apple have always passed these on in similar situations in the past (you only have to look as far back as the MBP launch).
I've read that a 7800GTX was successfully converted to a Quadro but there aren't any details on that yet. Can a 7800GT be flashed into a 7800GTX? I haven't looked yet. If someone with a Quadro 4500 can install Windows and then extract the card's firmware and post it on here. Then someone with a 7800GTX could try flashing it to their card (after backing up the original firmware of course).