Do you think I'd notice a speed increase? Or decrease? I don't do anything heavy (like video editing, 3D modeling etc). The Quicksilver has dual 1GHz processors, but has SD RAM (100MHz FSB), where as the PB has DDR333. The Quicksilver has 1GB RAM, and I'd kit the PB out likewise One reason I am considering the move is that my parents have planed a lot of building work this summer (the house will be in pieces!), and I can't see how on earth I'd have the space to have my comp setup, so this seems as good a time as any to make the move to a portable. So what do you think? Many thanks!