Quote Originally Posted by prava View Post
Moore's law doesn't talk about performance...but about transistor/mm2 (as far as I know).
As far as you know is correct, Moore's Law is not actually a law, it is just a silly observation. Gordon Moore plotted the transistor density (or costs) vs a time scale and the slope derived Moore's Law. Nothing fundamentally drives Moore's Law in a physics related concept, it is purely economical.

The economics of going smaller drives companies to go smaller, and his observation was it takes roughly 2 years for an iteration of doubling the transistor density. Moore never once wrote, said, or pulbished any statement that device performance will double every two years, just that the complexity (or number of transistors) will increase as a consequence of utilizing the transistor density to drive better devices.