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The constraint in semiconductor export controls is geographic end-use. When a chip physically clears customs into an unrestricted country, the question of who ultimately operates it becomes harder to police.
A White House official has said Moonshot AI, the Chinese developer that released the Kimi K3 model last week, accessed Nvidia's GB300 chips located in Thailand, pointing to a gap in the enforcement layer.
The export control mechanism and where it breaks Export controls on advanced Nvidia silicon work by restricting the sale and delivery of specific chip models to buyers in China.
The GB300 is among Nvidia's highest-capability data center processors, and its exclusion from Chinese end-users is a core plank of US policy to limit frontier AI development in that country.
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