hello. i have always wanted to max out my ram to one gig in my powerbook 667...the one with the 16MB of video ram. will the extra ram actually speed up daily tasks like mail, internet, chat and itunes? or should the 512MB (current configuration) be enough. im a bit confused cause i was told that the overall system will run FASTER with the more ram you give it. i found this strange. i would think that 512MB would be enough to get maximum performance out of daily tasks. but is it correct that my system will actually run FASTER with more ram...or does it just mean that if i have a bunch of applications open the system wont slow down as much? hmm, i cant seem to get to the point. i hope someone can see what im trying to get at here. thanks for your help.