Supply-chain layers
Semiconductor manufacturing depends on EDA, IP, silicon wafers, photoresist, specialty gases, chemicals, deposition/etch/metrology tools, lithography systems, masks, foundries, OSATs, memory vendors, substrate suppliers, and system builders. An advanced GPU is the final product of a highly specialized global manufacturing network.
How bottlenecks form
If leading-edge lithography tools, HBM capacity, CoWoS-like packaging, ABF substrates, test equipment, or thermal materials are short, final GPU supply can be constrained. The more advanced the product, the more it depends on a few high-barrier stages. Capacity expansion requires tool lead time, cleanroom space, process qualification, and customer validation.
A framework for reading supply news
When reading supply-chain news, first ask where the bottleneck sits: wafer fabrication, advanced packaging, HBM, substrates, test, or system integration. Then ask how long that stage takes to expand and whether it affects cost, lead time, performance ceiling, or reliability. This avoids reducing every issue to process-node marketing.