> Moore's law is very much rooted in photolithography which is a 2D process. I don't see that "root". http://en.wikipedia.org/wiki/Moores_law http://en.wikipe

> Moore's law is very much rooted in photolithography which is a 2D process. I don't see that "root". http://en.wikipedia.org/wiki/Moores_law http://en.wikipedia.org/wiki/Moores_law It states a doubling time. (That page is about number of circuits, but there's another "law" about fab costs.) It doesn't specify a technology or geometry. That doubling-time changed about 2005. Maybe 3D would change it, maybe it wouldn't. Note that cubes of active elements are harder to cool than planes.