in H.264 playback off apples HD site. I was messing around with a G4 tower at school. I was curious to see how well it handled the HD playback in comparison to my friends brand spankin new 15 inch Powerbook. The results kinda bothered me, as i'm in the market for a powerbook very soon. The tower was getting about 15-20 fps, while occasionally making it up to 24. It was very watchable nonetheless. My friends powerbook stumbled all over the place. I didn't get a fps reading, but it wasn't nearly as good (ie. would drop out for a split second and only got maybe 10fps). I knew dual processors made for a great speed boost in terms of processor speed, but this seems kinda ridiculous to me. Should an old dual 1Ghz processer beat out a brand new 1.67 like that?