Macbook Specs: 1.83ghz, 512mb base unit I've tried running many STEAM Games via crossover (ver 6.02beta) in os x and its just horrible. 1. Takes about 3 minutes to load up steam 2. Playing CS1.6 a 5yr old game lags - ****** framerate at 25-35FPS, and lags (this is a milisecond lag) whenever i see any enemy, playable but not good enough to get frags 3. Halflife 2 and CSS virtually unplayable at 12-15FPS (Let me know if theres a bug fix from crossover for this) Under Bootcamp 1. Steam loads fast 2. CS 1.6 i get max FPS at 72.0 3. Halflife 2 and CSS playable at around 25-30FPS but again, lags a little but ok So my conclusion: Playing games on a Macbook on MAC OS X officially sucks for games, go bootcamp if you want a smoother experience. EDIT: Ive also tried WoW (UBinary) in mac os X vs WoW in windows, and it runs much BETTER in windows.