NEC said it has developed the world’s smallest transistor, a breakthrough that could lead to the production of a supercomputer the size of a desktop PC.

The design is 1/18th the size of current transistors and has a gate width of only 5 nanometers.

A typical semiconductor chip will be able to hold 40 billion of the NEC transistors inside a chip measuring one square centimeter, more than 150 times current capacity.

NEC said the transistor has a possible market launch set in 2020.