# IBM Achieves Breakthrough With Sub-1 Nanometer Chip Using Nanostack Architecture

> IBM says it has built the world's first sub-1-nanometer chip, cramming nearly 100 billion transistors onto a piece of silicon the size of a fingernail, roughly double the density of the 2nm chip it showed in 2021. The trick is a 'Nanostack' architecture that stacks transistors vertically rather than only shrinking them sideways, which IBM claims delivers 50 percent more performance or 70 percent better energy efficiency, plus a 40 percent gain in the SRAM scaling that memory depends on. Why care about a lab demo that will not reach production for perhaps five years? Because the entire AI boom rests on a bet that compute keeps getting denser and cheaper, and classic transistor shrinking has been running out of room. IBM has also sketched a path toward 0.1nm, suggesting the runway for AI hardware scaling extends at least another decade. If the roadmap holds, it quietly resets expectations for how far frontier training can keep pushing.

_Section: [Daily AI Updates](https://www.wortins.com/daily-ai) · Source: IBM Newsroom · Published Monday, July 20, 2026_

## Wortins' read

IBM says it has built the world's first sub-1-nanometer chip, cramming nearly 100 billion transistors onto a piece of silicon the size of a fingernail, roughly double the density of the 2nm chip it showed in 2021. The trick is a 'Nanostack' architecture that stacks transistors vertically rather than only shrinking them sideways, which IBM claims delivers 50 percent more performance or 70 percent better energy efficiency, plus a 40 percent gain in the SRAM scaling that memory depends on. Why care about a lab demo that will not reach production for perhaps five years? Because the entire AI boom rests on a bet that compute keeps getting denser and cheaper, and classic transistor shrinking has been running out of room. IBM has also sketched a path toward 0.1nm, suggesting the runway for AI hardware scaling extends at least another decade. If the roadmap holds, it quietly resets expectations for how far frontier training can keep pushing.

## Source

[Read the full story at IBM Newsroom](https://newsroom.ibm.com/2026-06-25-ibm-debuts-worlds-first-sub-1-nanometer-chip-technology)

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