Well, I finally took the plung and installed 1GB of memory into my rev a TiBook (500MHz). It took a second trip to where I purchased the memory, since both chips did not fit properly. To get the memory to seat properly in the upper slot, I needed to get the one that goes in the rev b TiBooks. So, I have one PC100 and one PC133 chip in the laptop. Both are CL2 222 speed code.
One thing that people might not be aware of, you need to use a small object (flat head screwdriver works) to get the tabs to secure the bottom chip properly. Essentially, you need to put the chip in, if it doesn't click into place, hold the chip with one finger, and use the other hand to spread the tabs so that they lock the chip in place. Using the smaller chip in the upper slot makes the keyboard sit properly, and not give any mush/play to it.
When ordering up your chips, be very careful as to which ones you are getting. Also, PC133 in both the upper and lower slot do not work. The first time I had them in, I got the very first kernel panic ever. The computer would also not restart. Eventually we put the PC100 in the lower (the larger chip) and the PC133 in the upper. This way, they both seat properly and everything functions correctly. I don't know exactly why this happens, but it did for me, so be careful. While it might sound nice to have both PC133 chips in the computer, you might have to return the one for the lower slot.
I would be interested to hear if anyone else has installed 1GB of memory into their PowerBook G4's, their luck with it, as well as which revision and speed system they have.
One thing that might be good is, depending on what Apple does, I might be able to use the PC133 chip in my next PowerBook in about 2 years.
One thing that people might not be aware of, you need to use a small object (flat head screwdriver works) to get the tabs to secure the bottom chip properly. Essentially, you need to put the chip in, if it doesn't click into place, hold the chip with one finger, and use the other hand to spread the tabs so that they lock the chip in place. Using the smaller chip in the upper slot makes the keyboard sit properly, and not give any mush/play to it.
When ordering up your chips, be very careful as to which ones you are getting. Also, PC133 in both the upper and lower slot do not work. The first time I had them in, I got the very first kernel panic ever. The computer would also not restart. Eventually we put the PC100 in the lower (the larger chip) and the PC133 in the upper. This way, they both seat properly and everything functions correctly. I don't know exactly why this happens, but it did for me, so be careful. While it might sound nice to have both PC133 chips in the computer, you might have to return the one for the lower slot.
I would be interested to hear if anyone else has installed 1GB of memory into their PowerBook G4's, their luck with it, as well as which revision and speed system they have.
One thing that might be good is, depending on what Apple does, I might be able to use the PC133 chip in my next PowerBook in about 2 years.