China just yanked back a marquee tech title the US has mostly owned for decades, the New York Times reports. A new machine called LineShine, housed in the Shenzhen Cloud Computing Center, has been named the world's fastest supercomputer after testing more than 20% quicker than El Capitan at California's Lawrence Livermore National Laboratory, which had led the Top500 rankings since late 2024. What's raising eyebrows isn't just the speed, but the design: LineShine relies on standard CPUs rather than the GPU chips that dominate high-end systems and are a focus of US export controls. It uses domestically-designed conventional chips and could be China's way of illustrating it is self-sufficient in the world of computing, Reuters reports.
Professor Jack Dongarra, who helps run the Top500 list and inspected the machine, called it "an impressive system" and a different path for blending AI and traditional science. The setup could offer China a workaround to US limits and tariffs on advanced AI chip exports, prompting one US researcher to describe CPUs as a "loophole" in current rules. The system uses custom Arm-based chips with nearly 14 million cores packed into 90 cabinets, and has already been applied to complex climate and brain simulations. China hadn't topped the list since 2017; experts say the surprise isn't its capability, but that it chose to seek public recognition now. The US holds the second, third, and fourth spots on the list, the Guardian reports.
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