Hey I'm a Mac newbie, and have a question regarding ram for the 1GHz iBook that came out this year. I found a site that sells 512mb DDR PC2100 200 pin SODIMM ram chips for 87.00, which is better deal than Crucial's chip for 137.99. However, I'm not sure whether or not it is compatible with an iBook. I'm assuming it is, becuase the specs on the ram exactly match what Crucial has listed as their iBook compatible ram chips. So what I would like to know is, even though the specs of the ram chips are identical, is there still a difference between PC and Mac ram, or should I be OK in purchasing this chip? Please let me know. Thanks for your help! Oh, and the site I'm referring to is www.ewiz.com, incase that helps. . .