I have a 1.8 pent upgraded from 1.5, not much speed difference. I put a gig of ram in it-- took the expensive fast ram out--383-- and threw slower ram in. All of a sudden I could do twice as much. This was with plenty of free Virtual. I had frozen with Selene and a Marfono set and a ton of lights. Now, no prob. I kknow Pentium and Athlon is talking apples and oranges but still. . .It's definetly the ram. Emily