IBM unveils sub-1 nanometer chip technology

IBM has unveiled the world’s first sub‑1 nm chip technology at the 0.7 nm (7 angstrom) node, built on a nanostack transistor architecture that vertically layers nanosheet structures. The research device integrates ~100B transistors on a fingernail‑sized chip, nearly doubling density over IBM’s 2 nm technology. Published results suggest 50% more performance or 70% greater energy efficiency. IBM anticipates production adoption within five years, positioning nanostack for CPUs, GPUs, and mobile processors.