Graphics cards options for my 2006 quad 1,1 are confusing especially as im only upgrading for the windows, hope you can help. Happy with my 7300gt for the mac side for Autodesk Alias/photoshopping etc However I render with Bunkspeed on windows 7 side and looking to upgrade with a decent graphics card for this. Bunkspeed is 'optimised' to use cuda cores so after an Nvidia ideally. Could buy a mac 8800gt (512mb) but for £120 I could buy a better 1GB GTX or maybe spend a bit more and buy a low end quadro. Questions: Can pci-e 2.0 cards work in a pci-e 1.1 mac pro? If so any suggestions for which gtx/quadro model i aim to buy (under £250)? If not what nvidia pci-e 1.1 cards can i buy....?