So I was very kindly given a 1,1 Mac Pro by a complete stranger (specs should be in signature) and I would very much like to install Yosemite. I have read many things about this subject and I am left confused about choosing a graphics card. Please help me out. I would like to install Yosemite onto an ssd via SATA and run nothing other than that. Also I should mention that I am located in Australia (TAS). Thank you in advance.