Attached Link: http://www.pixels3d.com/products/tempest.html

Got no idea LD. I've only messed with the Pixels 4 demo (which Firefly is based on) and that was years ago but I certainly don't remember thinking that it was at all slow. btw - Poser 6 appears to use the Tempest renderer from Pixels 5, at least it's got most of the same features.