Computer Chips More Powerful Than Any in Existence | NYTimes

New materials and manufacturing techniques are making chips even tinier:

As points of comparison to the size of the seven-nanometer transistors, a strand of DNA is about 2.5 nanometers in diameter and a red blood cell is roughly 7,500 nanometers in diameter. IBM said that would make it possible to build microprocessors with more than 20 billion transistors.