Hey guys - Need some advice here. I play a ton of Starcraft 2, and recently picked up Portal 2. When Diablo 3 comes out, I plan on giving up everything else in my life for that. Here is my current rig: Mac Pro 1,1 3.0GHz Xeon Quad Core 14GB RAM (Excessive yes, but I got it this way) ATI Radeon X1900XT I am considering selling the Mac Pro to get a 2011 27in i7 iMac with the 2GB Video card. Is this a smart move, or should I just swap out my crappy X1900XT card for the 5770 for $250 and keep the money?