There is one thread I found that talks about this:
http://forums.macrumors.com/showthread.php?t=762659I'm not sure it's real, the screen shot probably is, but can the 12" PowerBook G4 really use all 2.25 GB of RAM? It probably only uses up to 1.7 GB. Also, all 12" PowerBook G4s (All PowerBooks G4 period) use DDR memory, not DDR2. Trust me, there is no way that a PC2-6400 DDR2 will work in any PowerBook! Actually, after a little research, it appears that not a single PowerPC Mac, except the Dual and Quad Core Power Macs ever used anything more than DDR Memory. The Dual and Quad Core Power Macintosh G5 did use PC2-4200 DDR2, and that is about the slowest of all DDR2 memory. Even my 5 year old MacBook Pro (Intel) uses faster PC2-5300 DDR2 (probably the most popular DDR2 of all time).
Yes, the DDR and DDR2 SODIMMs both have 200-pin, but are not at all compatible! (Completely different technologies, double the data rate, twice the CAS Latencies, etc.) DDR and DDR2 are just as different as DDR2 and DDR3. (Except they had the same 200-pins for SODIMMs)
I have trouble finding a single 2GB DDR-333 (PC2700) SODIMM Module. I did read (now non-existent page) a page from Agile Technologies that they had one, but it was ECC. I emailed them an hour ago and await their response. It was a September 5, 2002 Press Release when they announced their 2GB DDR SODIMM Module. This is a Google web cache of the page with the Press Release:
http://webcache.googleusercontent.com/search?q=cache:yBHXNa6kGXcJ:www.agiletech. org/pr04.htm2gb+single+pc2700+ddr+-ddr2+-2x1gb+-1gb+-512mb+%2Bsodimm+-dimmmodule&cd=1&hl=en&ct=clnk&gl=us&client=safari&source=www.google.comLet me know if you can ever locate a single 2GB PC2700! (or any
single 2GB DDR Module for that matter)
Thanks in advance if you do find a 2GB DDR, I'd like to try it myself!