hmmmm, memory...
i've had an ibook G4 800 since jan -- and i'm still using 256 megs of ram -- i probably should upgrade but it seems like its been enough. i usually only have safari, itunes, and a couple of terminals open and i really wonder if extra ram would make a huge difference -- i've got a dedicated swap partition and never really play games, warcraft 3 runs fine when i do. anyways, when i got the ibook i'd counted on waiting to get ram but the funny thing is the prices have actually gone up lately. a few months ago a 512 pc2100 sodimm could be had for < $100 which is no longer the case. but yah, as far as the 1024 stick goes its all the same, whether its for the brand new ibook g4's or the older ones; it will definitely work, ive seen it in action. 640 is an artificial limit, just get high quality ram (transintl does well). i just hate the idea of having a 128 stick and 1024 in the same machine, it just doesn't seem right.
man soldered on ram really sucks.