dr_gallup said:Pro/E will run just fine under windoz on dual processor machines or new dual core CPU's from Intel & AMD. It just doesn't use more than one CPU. But if you are running lots of different apps you can spread the load across the processors. I've got 16 windows open on 2 virtual desktops with a finite element solve going on right now, that is pretty typical. So the cartoon is right on, one CPU is running Pro/E & the other is just siting there twiddling it's thumbs.