IBM Reveals Sub-1nm Chip With 100 Billion Transistors on a Fingernail

IBM unveiled the world’s first sub-1-nanometer semiconductor chip, using a nanostack architecture to vertically stack transistors and fit nearly 100 billion transistors on a fingernail-sized wafer, with up to 70% energy efficiency gains over its 2nm predecessor. Production isn’t imminent, as IBM aims to enter markets within five years and continues work on thermal management and integration challenges.