I am really sorry for this newbie question, and I did search for my answer first. Anyways, I purchased a brandnew 12inch iBook over the summer (after the slight speed bump). Anyways, I want to upgrade the RAM, but I am confused at which RAM to purchase. On the Crucial website, it says to purchase DDR PC2700. However, when I read the user manual that is preloaded onto my iBook, it says to purchase DDR PC2100. Which one should I get. I bought this iBook towards the end of August, if it helps with which type i should get. Again, sorry for this question, which has been asked a million times.