Hi Guys I did a search for this topic, but couldnt find one, so apologies if it has been answered in the past....... I have finally come back to the Mac scene, after 3 years of abuse from WindoZe machines and I need to increase the memory in my iBook from the stock 256mb. I cant afford a 1gb chip at present so have to plumb for a 512mb, now, here is the question (at last!!!) Can i stick a 512mb SODIMM PC2700 in there instead of a PC2100??? as I am finding PC2100's are becoming a bit limited in stock where i live. Thanks guys.