IBM 0.7nm Nanostack Chip Packs ~100B Transistors, Doubles 2nm Density

IBM's 7-angstrom (0.7nm) node uses a 3D nanostack transistor architecture to achieve roughly 100 billion transistors per fingernail-sized chip, nearly double the density of its 2021 2nm chip. This is a research demonstration, not a production process, but signals continued scaling headroom relevant to future AI accelerator roadmaps.