What does Poser like? great question. Poser is a very clunky legacy application, and takes advantage of very little technical novelty. The PhysX processor is supported by only a few applications, and Poser isn't one of them. Poser wants a very fast processor, multicore (supported only in render), as much memory as you can get, and a very fast hard drive. Hard drive is a big deal, particularly if you have giant libraries of props/figures/textures. Poser does not support the kinds of things seen in Lightwave, 3DS, etc. . . no hardware shaders . . . just a very barebones Open GL implementation. That's all. You should be aware that a new version of Poser, Poser Pro, is supposed to be released "any day now". The best performance solution for Poser is probably Poser Pro + Lightwave.