Samsung Launches HBM4, Widening Memory Performance Gap
Event summary
- Samsung began mass production and commercial shipments of HBM4 memory in February 2026.
- HBM4 offers a consistent processing speed of 11.7 Gbps, a 46% increase over the industry standard and 22% over HBM3E’s peak.
- The new memory provides a 2.7x increase in memory bandwidth per stack, reaching up to 3.3 TB/s.
- Samsung anticipates HBM sales to more than triple in 2026 compared to 2025.
- Sampling for HBM4E is expected in 2H 2026, with custom HBM samples available in 2027.
The big picture
Samsung’s HBM4 launch underscores the escalating demand for high-bandwidth memory driven by the growth of AI and machine learning workloads. Securing an early lead in this critical component market provides Samsung with a strategic advantage in the broader AI infrastructure ecosystem, potentially impacting the competitive landscape for GPU and AI accelerator manufacturers. The move also highlights the increasing importance of design technology co-optimization between memory and foundry businesses to achieve performance breakthroughs.
What we're watching
- Competitive Response
- Competitors like SK Hynix and Micron will likely accelerate their HBM4 development and production timelines to counter Samsung’s early lead, potentially triggering a price war or further innovation race.
- Adoption Rate
- The speed at which GPU manufacturers and hyperscalers integrate HBM4 into their systems will dictate Samsung’s ability to meet its ambitious sales forecasts and solidify its market position.
- Yield Stability
- While Samsung claims stable yields, sustained production at scale using the advanced 1c DRAM process will be critical to avoiding supply bottlenecks and maintaining its competitive advantage.
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