I am using an iMac 27 inch 3.4 GHz intel core i7 w/ 16GB 13333 MHz DDR3. Phoenix works great ...for a while then the phantom feature stops working. To be honest, while Phoenx renders Mesh very well, Imprudence viewer's graphics are sooooo much better (crisper, truer color, rich, vibrant) than Phoenix viewer...this is of course subjective.