What is the need for a really fast (RPM) HD? I am talking 15K rpm or faster. I was talking with someone that I work with that said he would like to build his own computer. One of the things that he said that he wanted was HD with a rotational speed of 15K or faster. I told him, from my understanding, that unless he was doing "intense" video or graphic editing, 10K is more than you would ever need. Am I close to being right? p.s. The most that he wants to do with this "dream" 'puter is to watch movies.