I actually have System A, and the first thing I noticed is that everytime I render, I'm using the maximum amount of ram I have, 1024 Mb (or very close to it). I have my page file/virtual ram set up on my D drive which is a SATA hard drive, that seems to help a little. My C drive which has Poser on it is just an IDE drive. As soon as I can afford it, I'm going to get another gig of ram.