The problem with the fan probably explains why my AMD went over the edge. My computer room at home is cooled by the air conditioner in the next room. The temp in the computer room is never anywhere near as cool as the other room. And during the day when I am at work, the air conditioner stays off. My computer room was orginally a breezeway between my studio and the rest of the house with sliding glass doors on one side and a bank of three very tall windows which covers pretty much the other side. It gets pretty hot in there during the day even with the air conditioner in the other room on high. PLUS, it sits next to another tower computer. Gee, I guess I had better leave the air conditioning on when I go to work... As far as multiple processors, I am a little unclear how to take advantage of them for Bryce renders. When you speak about Bryce Lightning, as I understand it, you are referring to the program inside Bryce 5 that handles network rendering, not a separate product. If Bryce does not support multiple processors, then the only way to speed up rendering (other than by a super-fast CPU and 1 GIG of memory max) is using multiple machines set up as a render farm (again, using Bryce's internal network rendering software). I am correct in this assumption? Our IT guy told me that the usually the operating system handles the dual processing function and that would not depend on Bryce internally supporting multi-processing in its code. I would like to believe this, but I am skeptical. Taking his view to its extreme would lead one to believe that four or even eight processors on the motherboard would make a difference in rendering time.