I am running an AMD 2400 XP with 1gig ram, a 80G SATA 7200 drive and a GeForce3 Classic AGP with SWX 2005 0.0 . I don't have any real complaints about speed but was looking for the groups opinion about what I would need t buy to get a real noticeable speed increase. I am using this for relatively complex solids but no complex multi screen assemblies and only one screen open at a time.. Rendering is a priority and it this machine is just a bit slow. All other programs the machine does quite well without any complaints. I haven't kept up with the available chips and graphics cards. I appreciate your help.