Where can a Chinese buyer purchase top-end Nvidia ... of A100 artificial intelligence chips made by the U.S. chip designer, pricing them at $20,000 a piece--double the usual price.

Last year, the U.S. imposed rules restricting Nvidia from selling its A100 and H100 chips to China, after which the company had come up with A800 and H800 chips as alternatives for the Chinese market.

Nvidia’s new A100 data center GPU, launched in May, uses chip foundry TSMC’s 7nm process ... The company’s stock price was down about 1.6 percent in after-hours trading Wednesday.