Ok I am doing the same render in both computers, I am rendering a 3D bottle cap turning around for 20 seconds at the fullest resolution. This is in Lightwave. Now I have 2 computers competting, a Mac Book and a Mac Book Pro, and the mac pro is giving me just 1 hour less in rendering than the Mac Book ¿? The thing is the aspects on both machines, look: Mac Pro Processors: 8 cores of 2.6 each Ram: 10GB Mac Book Pro: Processor: 2 cores of 2.4 Ram: 2GB How come a Mac Book Pro that is so inferior in aspects, not to mention is more than a year older than the Mac Pro, has almost equal rendering time than the Mac Pro? Take a look at the picture attached.