the nvidia 9400 doesn't help much. this rev B i got is much better than the rev A i used to owned. the youtube and movie lagging is gone. but it's still not powerful enough for a game. i played eschalon book:1 which is not quite heavy and demanding like the new games out there. let alone playing half life 2. it's overheating and locking down the cpu to 800mhz just like my old air. see the screenshot. after playing for 20 minutes, it's becoming very laggy and unplayable. i guess this thin mba is not ok unless playing simple games like gamehouse's card and board games.