Hey, I run P5 on a Pentium III 800 Mhz machine with 256 Mb of RAM, and it runs quite all right. I normally work with a texture shaded document style, and that runs smoothly enough as long as I do not work on scenes with tons of models...hair works fine, etc. Of course a meaner machine would make my poser experience less jerky, but my 800 Mhz machine is up to the job. Hope this helps, Hanz