NVIDIA has ordered 300,000 more H20 AI GPUs from TSMC just weeks after the ban on selling to China was reversed. That's great news for NVIDIA, but some national security experts are sounding the alarm.

China has summoned Nvidia to address alleged H20 chip security flaws, raising fresh concerns about the AI giant’s China business.

Washington in July cleared Nvidia to resume sales of the H20 chips to China, reversing an effective April export ban. Beijing has since sought supporting documentation on potential risks, including vulnerabilities,