GLOBAL PC shipments fell 21.2 percent year-over-year in the third quarter of 2026 to 58.1 million units, marking the sharpest third-quarter decline on record, according to Omdia. IDC reported a 20.1 percent drop to 62.7 million units, also the largest Q3 contraction in its history.

Desktop shipments sank 23.5 percent to 11.7 million units. Laptops fell 20.6 percent to 46.4 million units.

The collapse stems from a structural cost shock rippling through the supply chain. Since 2025, demand for high-bandwidth memory and server DRAM from AI workloads has absorbed fab capacity, leaving consumer-grade memory constrained and expensive. Memory and storage now consume nearly 40 percent of PC bill-of-materials costs—up from a typical 15 percent—pushing PC prices up more than fourfold, according to Omdia principal analyst Ben Yeh.

Vendors front-loaded inventory in the first half of 2026 to lock in component prices before further increases. That strategy backfired. As elevated pricing finally hit end-market retail in Q3, consumers and IT departments stopped buying. Channel partners now carry excess stock in a weakening demand environment, creating pressure for margin-eroding promotions.

Jitesh Ubrani, research director for consumer devices at IDC, said pricing will remain elevated. IDC expects only modest, temporary price relief in coming quarters, with macro headwinds threatening to deepen the downturn.

Vendors and their manufacturing partners began cutting production in Q3 as channels worked through bloated inventory. The supply crunch for consumer-grade memory looks structural—tied to data center and AI chip demand that shows no sign of abating. Until fab capacity rebalances away from HBM and server applications, consumer PC pricing will stay pinched.