Well, before I begin, I know this would probably be better suited in another threat; however, dont have enough time to look through all the older ones atm. I'm finally switching over from a pc to a mac. Got tired of all the little window errors that crash the system, auto updates that give you critical errors, and rebooting from the oem windows cd saying it's not compatible version to repair with; even though it's the exact same disc installed when the computer was built. I found a nice 4,1 Nehalem 2.8ghz quad core that I'm looking at. The main question I have is I do a little lite gaming, such as star craft 2 and other similar games. Will the 120gt handle that or shoudl I upgrade to the radeon 5770/80. And another thing I've been reading is that mountain lion has driver support for radeon 6950, which I woudl love to just swap over if drivers allow. Would like to get a little input as to what people think. Oh, on a side note. I've read that crossfire/sli are not supported on a mac platform, so a second gpu doesn't enhance performance at all, just gives independant gpus for each monitor that you use. Is that the case; or have I misunderstood how that is working?