Mine runs just perfect... no issues here Model Name: Mac Pro Model Identifier: MacPro3,1 Processor Name: Quad-Core Intel Xeon Processor Speed: 2.8 GHz Number Of Processors: 2 Total Number Of Cores: 8 L2 Cache (per processor): 12 MB Memory: 8 GB Bus Speed: 1.6 GHz Video: nVidia 880GT