Quote - apple has also been selling quad G5 computers for quite a while. I dunno of any inherent advantage (other than heating one's room in winter, or in summer for that matter), nor do I know if any 3D software can use all 4. however, it's the norm nowadays for OS X software writers to exclude older machines and older OS (9.x, 10.1, 10.2 e.g.). in any case, poser 7 won't be able to use 4 processors AFAIK, and there isn't even any hint yet that it can use dual processors.

Most 3d apps can use all four cores: Lightwave, Carrara, VueI, even apparantly the $1.99 version of Hexagon modeler :) Poser is in the minority, and would be very surprised is Poser7 isn't updated to take advantage of this. If it doesn't it isn't a very thourough upgrade. My four core PC actually runs cooler than my P4 2.4GHZ machine, yet is 500% faster. There is definetly an advantage in most cases, and such systems are getting more and more affordable.