Korea Is The Bottleneck NVIDIA Cannot Route Around
The reason Jensen Huang keeps coming back to Seoul is not goodwill — it is dependency. Samsung and SK Hynix together produce roughly 70% of the memory that NVIDIA solders onto its AI processors [1], and on June 2, 2026 NVIDIA quietly closed the loop by certifying Samsung, SK Hynix, and Micron as HBM4 suppliers for the new Vera Rubin accelerator, which has now entered full production [2]. HBM (high-bandwidth memory) is the stacked DRAM that sits next to a GPU and feeds it data fast enough to keep the compute cores from starving; without enough of it, no GPU shipment, no AI factory, no robot. KB Securities' Jeff Kim is blunt about the trajectory: 'Nvidia's dependence on South Korean suppliers is rising' [3].
The second layer of dependency is physical. Huang told reporters on arrival that 'Because Korea is a manufacturing center of the world, we can apply the robotics technology, the physical AI technology that we invent here for the industry' [4]. Quad Investment Management's Seung-yub Lee makes the same point from the customer side: 'South Korean companies are running high-end factories, which need these chips' [3]. NVIDIA's robotics pitch needs real production lines to land on, and Korea's chaebol-run shipyards, auto plants, and chip fabs are among the few places in the world dense enough to absorb tens of thousands of Blackwell GPUs and turn them into actual physical-AI deployments rather than slideware. The Seoul visit, in that frame, is less a sales trip than a tour of NVIDIA's own critical infrastructure.


