Where Chip Manufacturing Capacity Actually Sits, and What Constrains It

Three stories from the past two years explain more about chip capacity than any forecast. One is a history lesson, one is a policy bet, and one is a supply chain warning.

Start with the history. IEEE Spectrum reported in December 2024 that IBM ran a project called SWIFT, led by manager Bill Harding, which fabricated integrated circuits in under one day. According to the account, SWIFT averaged 5 hours per fabrication layer. The fastest modern fabs take 19 hours per processing layer, and the industry average is 36 hours. Those are the numbers the article gives, and it is careful about the comparison: today's chips use more layers and larger wafers, which does not fully close the gap. The point is not nostalgia. The point is that a fully automated line was demonstrated 54 years ago, and the throughput achieved then has not been matched since.

Now the policy side.

TechCrunch reported on 15 July 2026 that India approved a Mobile Phone Manufacturing Scheme worth ₹625 billion, about $6.5 billion, running five years and paying incentives of 2.25% to 5% on eligible sales, plus 1.5% for local sourcing and 3% for product design. New Delhi added ₹1.28 trillion, around $13.3 billion, for domestic semiconductor manufacturing, expanding a $10 billion program launched in 2021. The context is sobering: Counterpoint Research figures cited in the same article put China at 63% of global smartphone production in 2025 and India at 18%. Apple has assembled iPhones in India since 2017, and about 25% of its iPhones are now made there.

Then there is the bottleneck nobody legislates.

Tom's Hardware reported on 1 October 2024 that Hurricane Helene hit Spruce Pine, North Carolina, home to the only ultra-pure quartz mines in the world, operated by Sibelco North America and The Quartz Corp. The storm dropped over two feet of rain and cut road access. The Quartz Corp told The Verge it was too early to assess damage to its production facility, the article says, and Sibelco reportedly suspended operations. High-purity quartz is used for crucibles that hold molten silicon during ingot growth.

How tight is that dependency? Brian Potter examined the claim in Construction Physics in November 2024 and found it partially true. Spruce Pine is estimated to produce 180,000 to 200,000 tons of high-purity quartz a year, from two companies. Quartz crucibles are necessary for most semiconductor manufacturing, and the town is where most of the quartz comes from, he wrote. But he also notes alternatives exist that are, in his words, not yet developed, not quite as good, and not quite as cheap. Cutting the supply would mean lower yields and higher costs rather than a total stop.

One more data point. Texas Instruments said on 24 October 2024 that it had started GaN power semiconductor production at its Aizu, Japan, factory, alongside Dallas, quadrupling internal GaN capacity. The company says it aims to make more than 95% of its chips internally by 2030. Capacity, in other words, is also being bought one factory at a time.