I have a 2006 Mac Pro and have been wanting to update to OS X Mavericks but I can't because I have a Radeon X1900 graphics card and that is not supported any more by Apple. I have OS X 10.6.8 running so I have the software to upgrade it but the question is can I update to Mavericks if I get a supported graphics card? Do you think there might be other issues that would prevent me from being to update?
P.S. Yes my Mac Pro is 64-bit.