HBM to claim larger share of DRAM capacity - Electronic Products & Technology

HBM's encroachment on DRAM capacity is fundamentally a repricing of area economics. A single HBM3E 12-high stack consumes 12 DRAM dies; factoring in TSV and hybrid bonding yield losses, wafer usage runs 8-12x equivalent DDR5. Every 1% of capacity shifted to HBM shrinks effective standard-memory supply by roughly 10%. The chain reaction propagates through advanced packaging: CoWoS slots in Taiwan, China and hybrid bonding equipment orders (BESI, ASMPT) are booked through H2 2026. The resulting DDR5 supply gap is driving 15-20% QoQ contract price increases in Q4 2024—structural rebalancing, not a cyclical blip. On compliance, US export controls on advanced packaging equipment are creating an HBM island. Even if CXMT cracks 16nm DRAM dies, the absence of TSV mass production and 2.5D packaging capability locks it out of the AI accelerator supply chain near-term, reinforcing the oligopoly pricing power of SK Hynix, Samsung, and Micron. The strategic pivot is NVIDIA's roadmap. B200/GB300 doubles HBM3E content per package; HBM4 targets Q1 2026. The three majors are substituting capacity rationing for price competition—whoever secures CoWoS slots controls AI chip shipment cadence. 12-24 month tail: HBM will absorb 25-30% of total DRAM wafer starts. Standard memory enters a persistent seller's market. The industry's identity shifts from cyclical commodity to strategic resource, with allocation power replacing technology generation as the new moat.