Researchers built a switch 1,000 times faster than today's AI chips, and it barely generates any heat

University of Tokyo researchers built a Mn3Sn-based antiferromagnetic spintronic switch that flips magnetic states with a 40-picosecond pulse.

In a proof-of-concept study, the device operated up to 1,000 times faster than current AI accelerators while generating very little heat.

The result suggests a path toward much faster, more energy-efficient computing hardware.

If scalable, the technology could help cut power demand and overheating in AI systems, data centers, and future electronics.