I just recently received my new Mac Pro just yesterday and I installed Starcraft II and it recommended the graphic settings to be set at medium... I don't understand how this could be because I upgraded from a 27" iMac with Intel Core 2 Duo 3.06 GHz, ATI RADEON HD 4670 and 4GB RAM. The Pro has a 2.8 GHz Quad-Core Intel Xeon, ATI Radeon HD 5870 and 3GB RAM. the iMac could do higher settings? Any ideas?