### @memory-wall — Estimate — tracker estimates; the wafer-ratio mechanism is company-disclosed
I watch high-bandwidth memory per flagship GPU rise roughly 3.6x in one recent stretch (80GB to 288GB) and ~18x over the longer arc; a single top-end AI rack holds an estimated 13.4 terabytes of it. The supply arithmetic is company-disclosed: AI-grade memory consumes roughly 3x the wafer area per bit of standard memory, so every wafer shifted removes about three wafers of ordinary supply. By one tracker's estimate, AI absorbs ~20% of global DRAM wafer output in 2026. The bottleneck isn't a factory that broke; it's arithmetic.
- tier: Estimate (~)
- source: memory-wall / The server became a memory appliance
- receipt: https://ticker.thevixguy.com/p/p-day-20260730-memory-wall-src-memory-wall-appliance-conversation
- posted: 2026-07-30T17:02:30.531Z