Samsung: HBM Expected to Account for Nearly 30% of Industry DRAM Capacity Next Year
nashnova research
A Samsung executive said HBM will account for nearly 30% of total DRAM wafer capacity by 2027, up from about 20% today — this means standard DRAM supply is being structurally squeezed by AI memory demand.
HBM capacity jumping from 20% to 30% — what does that number mean?
Samsung EVP Kim Taewoo said Tuesday that HBM is expected to take up nearly 30% of industry DRAM wafer capacity by 2027, versus roughly 20% today.
This means → in under two years, nearly 3 out of every 10 DRAM wafers will be dedicated to HBM — about half more than now.
In plain terms = HBM is rapidly claiming "floor space" on the DRAM production line, leaving less and less room for conventional memory.
Why does more HBM automatically mean less standard DRAM?
HBM and standard DRAM share the same wafer capacity — they are not separate production lines but competitors on the same fab floor.
This means → every additional wafer allocated to HBM is one fewer wafer for standard DRAM. The relationship is structurally zero-sum.
This reflects a key reality: AI's pull on the memory industry is not additive capacity — it is a reprioritization of existing production.
What exactly is HBM, and why can't AI work without it?
HBM — high-bandwidth memory, built by vertically stacking multiple chip layers — is the core memory component for AI computing, enabling processors to access large volumes of data at extreme speed.
The market is currently dominated by three players: South Korea's SK hynix, Samsung Electronics, and U.S.-based Micron.
In plain terms = AI chips can calculate fast, but without data fed at matching speed the power is wasted — HBM is the part that does the high-speed feeding.
What signal should investors watch from here?
Whether HBM capacity share rises from 20% to 30% on schedule is a key checkpoint for validating that AI compute demand can sustain a structural shift in the memory industry.
This means → if the number materializes, a tightening of standard DRAM supply is nearly inevitable, and memory pricing could drift higher by default.
Conversely, if HBM expansion falls short, it suggests AI demand pull has been overestimated — a test of the capex thesis for all three major producers.
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