Packaging becomes AI choke point

The shortage is no longer just at the chip factory. It has moved one step later, into the part where several pieces of silicon and memory are bundled into one finished artificial intelligence processor, and that packaging step is now tight enough that Nvidia has reserved most of Taiwan Semiconductor Manufacturing Company’s top capacity. (cnbc.com) (digitimes.com) Taiwan Semiconductor Manufacturing Company showed how hard demand is still running on April 10, when it reported first-quarter revenue of 839.25 billion New Taiwan dollars, up 35.3% from a year earlier and above market expectations. Reuters said the company pointed to strong artificial intelligence demand as the driver. (reuters.com) A modern artificial intelligence chip is not one slab anymore. It is more like a tiny city block: a logic chip does the computing, stacks of high bandwidth memory sit beside it, and advanced packaging is the road system that connects them fast enough to matter. (cnbc.com) The packaging method at the center of this fight is called Chip on Wafer on Substrate, which Taiwan Semiconductor Manufacturing Company shortens to CoWoS. It is the process used to mount the compute die and the memory together on a base so they can act like one product instead of a box of separate parts. (cnbc.com) That step used to sound secondary next to making the wafer itself. Now Taiwan Semiconductor Manufacturing Company’s North America packaging head told CNBC that CoWoS capacity is growing at about an 80% compound annual rate, which is another way of saying the company is expanding very fast and still cannot relax the bottleneck. (cnbc.com) DigiTimes reported on April 10 that global advanced packaging capacity is in severe shortage and that Nvidia has already locked up most of Taiwan Semiconductor Manufacturing Company’s leading-edge CoWoS slots. When one customer books that much of the line, rivals can have wafers ready and still wait for the last assembly step. (digitimes.com) That helps explain why the artificial intelligence race keeps producing strange shortages. The constraint is no longer only the most advanced transistor process, because a chip that is fabricated but not packaged is like a car engine sitting on a factory floor without the rest of the vehicle. (cnbc.com) It also opens a door for Intel, which has spent years building its own advanced packaging tools. Intel’s alternative is called Embedded Multi-die Interconnect Bridge, and the new version, Embedded Multi-die Interconnect Bridge-T, adds through-silicon vias so power and signals can move through the bridge more efficiently. (intel.com) (tomshardware.com) Intel says Embedded Multi-die Interconnect Bridge-T is aimed at designs that connect logic chips to high bandwidth memory, which puts it directly in the same problem set that CoWoS dominates today. Intel’s product brief also says the architecture is meant to ease design conversion from other packaging technologies, which is exactly the pitch you make when customers are stuck in someone else’s queue. (intel.com) So the next phase of the artificial intelligence build-out may be decided less by who can etch the smallest transistor and more by who can finish the whole package at scale. Taiwan Semiconductor Manufacturing Company is adding packaging in Arizona and new sites in Taiwan, but as of April 2026 the line that turns silicon into a shippable artificial intelligence accelerator is still the chokepoint. (cnbc.com) (reuters.com)