I currently have an early 2008 Mac Pro with an nVidia 8800GT. I do some gaming under Mac OS X but the majority in Windows via Boot Camp. Running Medal of Honour over the weekend I have now found that I cannot get a decent framerate when running at my primary display's native resolution of 1920x1200. Lowering it makes things look worse than COD MW2 and its a little bit of a step backwards. It therefore seems a good time to upgrade the graphics card, something I have toyed with in the past but held off from doing. However, unlike with PCs, this seems to be a bit of a headache with the Mac Pro, not least because of the much higher costs of Mac ready cards. I have been searching and reading through the forums and was wondering whether anyone could shed some light on the following options and the likely performance increase: - Buying a Mac compatible 5770 and swapping out the 8800 GT. - Buying a 5870 and flashing it myself, or, for that matter, an nVidia GTX 285 (I believe they are impossible to buy these days). - Running a stock, retail, PC version of any of these cards or another, and running it alongside the 8800 GT. One final thing; I have never removed the 8800 GT and this seems fortunate in light of the issues it can cause - my Apple Care runs out in early Feb - am I likely to see a failure in the near future?