IBM Unveils NanoStack: A Sub-1nm Chip Breakthrough

"This is not just about making transistors smaller, but about reinventing the architecture of chips to deliver immense power and energy efficiency." – Jay Gambetta, IBM Fellow

The Core Announcement

IBM has introduced a new chip design, the NanoStack architecture, which they claim can fit 100 billion transistors on a fingernail-sized chip. This technology is described as equivalent to roughly 0.7 nanometers (nm) , potentially making it the first known chip technology to operate below the 1nm threshold.

This positions the NanoStack far ahead of current industry standards, where leading-edge chips are typically around 2nm. However, IBM cautions that the product is not ready for production and is expected to take several years to reach the market.

Performance Gains

In prototype testing, IBM reports significant improvements over its own 2nm chip:

• 50% improvement in performance
• 70% improvement in energy efficiency

These figures mirror the dramatic improvements IBM claimed when it debuted its 2nm technology in 2021, suggesting a consistent trajectory of innovation.

A New Era of Chip Construction

Jay Gambetta, Director of IBM Research and an IBM Fellow, called the NanoStack technology a "landmark moment" for the semiconductor industry. He emphasized that the achievement represents a fundamental reinvention of how chips are constructed, rather than just a routine miniaturization step, delivering greater power and energy efficiency through novel architecture.