I have a mac pro that I don't use anymore, and I am really really looking forward to F1 2010 coming out and want to get the PC version. Is it worth converting my 2 x Dual Xeon 5150 Woodcrest 2.66Ghz Mac Pro into a windows only gaming PC? Which is the best graphics card I can get for it that will work off the shelf? I don't need to go back into mac so it doesn't have to work in mac mode. Or would I be better off selling it and getting a windows PC purely for gaming? I'd rather not go through that hassle to be honest as I'm sure the Mac Pro should be able to work well with a decent graphics card?