GYEONGJU, Oct 30 (Reuters) - U.S. President Donald Trump

said on Thursday he did not discuss chipmaker Nvidia's ( NVDA )

state-of-art Blackwell artificial intelligence chip during talks

with Chinese President Xi Jinping.

He was walking back the previous day's remarks about

potentially helping the company to export a scaled-down version

of its current flagship GPU processor, a key component in the AI

race.

But Nvidia's ( NVDA ) hopes to get approval from the United States

and China to sell a scaled-down version of its most powerful AI

chip yet took a hit from Trump's comments on Thursday.

"We're not talking about Blackwell chips," Trump told

reporters aboard Air Force One, after leaving the meeting with

Xi, their first since he returned to the White House.

En route to South Korea on Wednesday, he said he might

discuss the chip with the Chinese leader.