I am trying to tweak as much performance out of my p3 800/133 as I can since I won't have the cash to upgrade for another year or two. I have my pc133 runing at 150 Cas 3 right now and my P3 is at 900/150. I want to sell my current memory (which does not do cas 3) and get some pc 150 Cas 2 so I will end up spending about an extra $15-20. Is the jump from 150 at cas 3 to cas 2 worth the trouble and the extra $15-20?