The AI hardware
supply chain.
An AI accelerator crosses six dependent stages before it serves a single query: design, fabrication, memory, packaging, integration, and the data center. The slowest stage sets the pace for the whole industry.
1. Design
Layer deep dive →Fabless designers (NVIDIA, AMD, Google, Amazon and others) define the chip architecture and the software stack around it. They own the blueprint, not the factory.
2. Fabrication
Layer deep dive →TSMC manufactures the large majority of leading-edge AI chips, with Samsung the main alternative. Building a new leading-edge fab takes years and tens of billions of dollars, which is why this step concentrates in Taiwan.
3. HBM memory
Layer deep dive →SK Hynix, Samsung, and Micron supply the high-bandwidth memory stacked next to each accelerator. AI workloads are often memory-bound, so HBM supply regularly sets the pace of the whole chain.
4. Advanced packaging (CoWoS)
Layer deep dive →The GPU die and HBM stacks are joined into one package on a shared interposer, mostly on TSMC's CoWoS lines. Packaging capacity, not wafer output, has repeatedly been the binding bottleneck for finished accelerators.
5. Systems integration
Layer deep dive →Supermicro, Foxconn, and other integrators assemble accelerators into servers and full racks, with the networking that lets thousands of chips train one model together.
6. Data centers and power
Layer deep dive →Finished systems land in data centers, where the constraint shifts from silicon to megawatts: grid connections, cooling, and power contracts now gate how fast AI capacity can grow.
Where the chain actually binds
The binding constraint rotates. It has been HBM supply, then CoWoS packaging capacity, and increasingly it is grid power for data centers. Each chokepoint takes years to expand, which is why AI compute shortages persist for quarters, not weeks, and why so much of the chain runs through Taiwan.
Follow the bottlenecks
One email when the supply chain picture changes: capacity expansions, new chokepoints, export-control moves. No noise.
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