What it means
DRAM is the main working memory of a computer — the fast, temporary store a processor reads from and writes to while it runs. It is a commodity built in enormous volume by a small number of memory makers, and its price moves in long cycles of glut and shortage. HBM, the memory bolted onto AI accelerators, is a specialised, stacked form of DRAM. That link matters: capacity, wafers and engineering pulled toward high-margin HBM are capacity not making standard DRAM, so the AI build-out can tighten the broader memory market even for buyers who never touch an accelerator.
Why it matters to investors
DRAM is a classic cyclical, but AI has bent the cycle: makers are steering capacity toward HBM, which can keep conventional memory tighter and pricing firmer for longer. For investors, the read-through is that memory names are now partly an AI story, not purely a commodity one — and that shifts how their earnings power should be judged.
Companies on this part of the chain
Named to show where the term sits in the AI supply chain — research, not advice, and never a recommendation to buy or sell.
Related terms
See DRAM in the live AI chain.
THE ENTITY maps every constraint onto one live model — which part is tight now, who owns it, and who gets squeezed when it moves. Plain-English reads you can check.
THE ENTITY is an educational read on the AI supply chain — research, not investment advice. It explains how the chain works and who sits where, never price targets or buy/sell calls.