HBM is not interchangeable with standard DRAM. It requires specialized through-silicon via (TSV) processes that cannot be easily converted from standard production.
The HBM Triopoly
Three companies control 100% of production:
- SK Hynix — 50% market leader
- Samsung — 40% fast follower
- Micron — 10% US-based
Supply Completely Sold Out
- “We have sold out our entire 2026 HBM supply” — SK Hynix CFO
- “Our 2025-2026 HBM capacity is fully booked” — Micron CEO
- Shortage persists through late 2027
The Price Signal
- +420% — DRAM price surge 2024 ($3.75 → $19.50)
- +20% — 2026 HBM3E contract price increase
Stargate Project Demand
OpenAI’s mega-project alone could require:
- 900K wafers/month by 2029
- 40% of global DRAM output
Why HBM Matters
- GPU performance limited by memory bandwidth
- HBM provides 10x+ bandwidth vs standard DRAM
- AI workloads are memory-bound, not compute-bound
- HBM requires 3x raw wafer material vs standard
HBM scarcity is not a temporary imbalance. It is a structural constraint.
This is part of a comprehensive analysis. Read the full analysis on The Business Engineer.
The post High Bandwidth Memory (HBM): The First Binding Constraint appeared first on FourWeekMBA.
Source: High Bandwidth Memory (HBM): The First Binding Constraint
