Hi I own a powerbook G4 550. I work for the site photosource.com. While working one day, I noticed the need to make my system to run as fast as possible, while remaining stable. have a 30gb hard drive, 4200rpm with a 2 mb buffer. I was looking at a 40gb hard drive, 5400rpm with a 16mb buffer. Would this be a significant speed upgrade? Also I was looking at a complete mother board swap to the 667 with the 133 bus in this revision. Would this be the faster upgrade? I have 512 of pc133 ram, so thats not much of an issue. is there a way to overclock the bus and processor through the bios possibly? This is seeming to be a fun project, and who wouldnt want to be able to claim that their powerbook is the fastes possible for their revision :) Thanks Nater _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail