Hi, Marque. Unfortunately, Poser 5's code doesn't support multi-threaded/hyper-threaded CPUs and dual CPU systems so you won't get much of a performance boost. I have a 2.4gHz hyper-threaded Pentium (1Gb dual channel RAM) and about the only noticeable boost in performance I've seen in Poser is that shadow maps are calculated just a little faster prior to rendering and the GUI is a bit more responsive. But I haven't noticed any significant reduction in rendering times overall.