DRAM scaling technology

DRAM scaling technology for HBM applications has pursued capacity and bandwidth gains through 3D die stacking and wider interfaces, as a complement to, rather than a full replacement for, continued scaling of the individual DRAM cell itself, since cell-level scaling alone has become progressively harder to sustain while preserving adequate signal margin. This combined scaling strategy, stacking more dies plus continuing incremental cell-level improvements, reflects how HBM capacity and bandwidth growth has had to draw on multiple scaling levers simultaneously rather than relying on any single one to keep pace with growing memory demand.