I'm shopping around for ram for my 1.33 12 inch powerbook and have narrowed it down to two. I would originally want to use Apple ram, but they're ridiculously expensive. The Apple retail store at my university sales ram and installs it, but it's not Apple ram, it's Samsung. I think they said that a 512 stick would be around 80 dollars. Should I buy from crucial or from my school? thanks.