[aih]

I have a G4 iBook (12") which is still chugging along perfectly, except its battery is almost dead. I havent used it for a while, my neice uses it occasionally when ever she is at my place. Instead of selling it off on eBay and making a couple of hundred backs, I was thinking of keeping it and maybe upgrading the memory from 256MB to 640MB. The upgrade would only cost me like 35 bucks.

Anyway, is DDR400 or DDR333 compatible with the iBook? I know the memory module installed in the iBook G4 are DDR266 but DDR266 is very scarce or twice the cost.

Will I see a bump in performance? Thanks a lot everybody. Cheers!

[adamfishercox]

DDR 266 is what you need, and yes.

[aih]

The perfect choice would definitely be DDR266. But the price for it is almost twice as much as DDR333/DDR400. Hence I wanted to confirm that they would work too ..

I read that the motherboard would downclock the DDR333/DDR400 to DDR266 without any issues.

[adamfishercox]

I don't know about that, all the Apple machines I have owned have accepted one type of RAM only.

[ibook_steve]

Faster speed DDR memory will work as long as it is DDR (not DDR2) and the correct shape (SO-DIMM). The slower machine just won't be able to run the faster memory at the faster speed.

Steve

[ghporter]

Originally Posted by aih 

I read that the motherboard would downclock the DDR333/DDR400 to DDR266 without any issues.

The memory clock is produced by the logic board-it doesn't so much "downclock" anything as it provides its own, native clock, which happens to be perfect for DDR266. In general (there are some odd and out of the mainstream exceptions), RAM is downward compatible for its clock.