For the record, I do myself, but I wonder what everyone's experiences are like? I ask, because I have a 20" iMac, 2.66ghz, 4gb RAM, 256 ATI graphics card and I run 3DS Max 2009 on 32-bit XP Home version through Bootcamp. At work we have an HP xw6600 workstation, Intel Xeon quad-core 2.50ghz, 4gb RAM, a 1gb nVidia graphics card, and it runs on 32-bit XP Porfessional. It's on a large network. And my point is that my iMac, whilst (surely?) less powerful than the work PC, actually renders a scene twice as fast. Literally: 14mins 15secs vs 29mins 36secs. I have done several scenes and an animation, and they all take twice as long on the works PC. We have had a guy come in and check the system out for us, and bar suggesting some minor tweaks he reckons it's performing as he would expect. Is the internal architecture of a Mac very different from a PC in order for me to see this difference? Thanks in advance.