Export controls need to be tightened after revelations the Chinese company used Nvidia technology, the leaders of a congressional committee said.

NVIDIA, the world's most valuable company until Monday, lost $600 billion of market value in a single day, the biggest in US stock history.

Nvidia is touting the performance of DeepSeek’s open source AI models on its just-launched RTX 50-series GPUs, claiming that they can “run the DeepSeek family of distilled models faster than anything on the PC market.” But this announcement from Nvidia might be somewhat missing the point.