• China's LineShine has regained the title of the world's fastest supercomputer.
• The system achieved 2.198 exaflops, surpassing the US's El Capitan by over 20%.
• LineShine is the first supercomputer to use solely CPUs to exceed 2 exaflops.
• This marks a significant technological achievement amid US export restrictions.
• The new rankings were announced at the International Supercomputing Conference in Hamburg.

China has reasserted its dominance in the supercomputing arena with its new LineShine system, which has achieved a performance rate of 2.198 exaflops, overtaking the US-based El Capitan, which previously held the title since November 2024. This event marks China’s first return to the top of the TOP500 rankings since 2017, when it was led by Sunway TaihuLight. LineShine's impressive computations represent over two quintillion calculations per second, primarily executed through general-purpose central processing units (CPUs) alone, distinguishing it from most supercomputers today that heavily rely on graphics processing units (GPUs), according to South China Morning Post, Al Jazeera, and India Times.

The design innovation of LineShine is notable; it utilizes homegrown LX2 processors developed under Armv9 licenses, coupled with KylinOS, a Chinese Linux distribution. This CPU-only design has garnered attention and praise, including from TOP500 co-founder Jack Dongarra, who remarked on its impressive architecture. LineShine consumes about 42.2 megawatts of power, distributed across nearly 14 million computing cores, a feat that positions it significantly above El Capitan's capabilities, according to South China Morning Post and India Times.

This achievement arrives amid a fierce technological rivalry between China and the US, exemplified by ongoing export controls and sanctions targeting advanced technology. Experts suggest that LineShine’s success indicates China’s ability to innovate independently, even as the US attempts to hinder its technological progress. The announcement in Hamburg was significant not only for its technical implications but also for the geopolitical narrative surrounding global computing power, according to Al Jazeera and India Times.