First off sorry if I posted in the wrong forum. I currently have a MacBook but will upgrade to a MBP soon. I also had a 1.8Gx2 G5 tower, and on my last visit to the apple store I wanted to know how much of an improvement I should expect when I move up to a MBP and since I do use hand brake often and it uses as many cores are available. I used a 2 min clip from a dvd I authored, and used the standard preset for apple TV. I couldn't upload the file for the imac 2.8 24" but it managed 50.75fps and an average of 41.14 fps. Hardly scientific I know. And in regards of time the Mac mini took almost 3 minutes, while the Mac Pro took slightly over 30 seconds.