[citation][nom]stingstang[/nom]How are we sure that they are really making it 19nm? We can't exactly just measure the size of the transistors ourselves. For all we know, it's 21nm, but they want to claim that they're better.[/citation]
???
Better question is, why are worried if there making 19nm transistors or not?
It not like "we've always had the ability to measure the transistors size until last year" type of things. For a very very very long time we always had to trust the mouth of the manufacture of the specs when it comes to the transistor sizes. Thats like asking same thing for intel and amd cpu's. How do we surely know that the core i7 2600k has 32nm transistors or amd Phenom ii's have 45nm in it?
Well unless you have an electron microscope, you cant.