IBM's latest chip packs in twice as many transistors as the current state-of-the-art chip by adding a second layer of silicon circuitry

Company claims technology provides up to 50 percent more performance or 70 percent greater energy efficiency

IBM just unveiled the world's first sub 1-nanometer chip: 100 billion transistors. IBM also says they've produced functioning devices with this technology.

IBM’s nanostack transistors could boost chip performance or energy efficiency.