By Adam Spatacco, The Motley Fool
Publication Date: 2026-10-06 15:35:00
Every GPU that powers a model training cluster has to be built somewhere, and that somewhere is almost always a fab operated by Taiwan Semiconductor Manufacturing (NYSE: TSM). Taiwan Semi does not design the artificial intelligence (AI) chips that get the headlines. Instead, the company manufactures them at nodes no one else can reliably hit at scale.
That quiet competitive advantage has turned TSMC into the physical backbone of the AI infrastructure buildout. Nevertheless, the conversation still seems to start and end with Nvidia (NASDAQ: NVDA), Advanced Micro Devices (NASDAQ: AMD), or Micron Technology (NASDAQ: MU). The foundry that is actually printing the silicon rarely gets the same amount of airtime.
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This gap is strange once you understand how the AI chip stack works. While designers continue to fight over architecture and software, the constraint that decides how many of those designs actually ship is advanced-node capacity — and TSMC owns most of that market.
The foundry actually supporting the AI chip stack
Nvidia and AMD design GPUs while Micron builds memory solutions layered alongside these chips. None of these…
