Nvidia and AMD have agreed to give the U.S. government 15% of revenue from sales to China of advanced computer chips like Nvidia's H20 that are used for artificial intelligence applications, a U.S. official told Reuters on Sunday.

It is unclear how many licences may have been issued, which firms Nvidia was permitted to ship to, and the value of the shipments allowed.

The US had frozen the sale of some advanced chips to China earlier this year as trade tensions spiked between the two countries.