Sparky, what year is that one, do you know? Mine is from 2006 and it's still going strong. I have 10.6.8 on it but it can run up to 10.7.x. Can't run 10.8. But really 10.6.8 is the best for now. You can put an ATI (I think) 5770 graphics card in it and it will help A LOT.