Powerbook G4 memory question

Hello everyone,

I have a PowerBook G4 that has 512mb of RAM. It has a single stick of that ram and the other slot is free. So, I wanted to upgrade this by adding another 256mb stick that I took out from my wife's new MacBook C2D (Upgrded hers by replacing one 256m stick with a 1gb stick). I am not entirely sure whether those RAM sticks are compatible with my older PB model. So, I wanted to check here before opening my PB and experimenting and if that is safe? Any inputs?

Thanks.

 

Thanks for the quick responses, switaw and WildCowboy.

When you say different types of RAM, how different does it mean? I think MB C2D is a DDR2 and the PB one is a DDR. I think they might be pin compatible though. So, the question becomes, are DDR and DDR2 so different that it wont even work (and could it damage something if I tried?) or is it simply a matter of the DDR2 stick running at a reduced speed (which I can live with instead of wasting the 256mb stick as right now).

Thanks again.

 

Got it! Thanks for the image as well... Wow... those pins are soooo close.. its easy to think they are exactly same.

Thanks CanadaRAM. I wont even try.