SK hynix’s HBM4 Packaging Roadmap: Doubling TSVs to Meet Western AI Accelerator Demand

SK hynix detailed its advanced packaging roadmap for High-Bandwidth Memory (HBM) at Hot Chips 2026, focusing on HBM4 and beyond, with plans to double TSV counts, increase I/O speeds, and integrate logic processes. The company also outlined a long-term vision for 3D packaging where HBM stacks directly atop AI accelerators, aiming to meet Western AI accelerator demand and challenge competitors Samsung and Micron.

SK hynix’s HBM4 Packaging Roadmap: Doubling TSVs to Meet Western AI Accelerator Demand SK hynix detailed its advanced packaging roadmap for High-Bandwidth Memory HBM at Hot Chips 2026, focusing on HBM4 and beyond. AsiaAI Publisher · August 24, 2026 · 2 min read · Source: 科技新報 TechNews Semiconductors & Hardware SK hynix detailed its advanced packaging roadmap for High-Bandwidth Memory HBM at Hot Chips 2026, focusing on HBM4 and beyond. The company plans to double TSV counts, increase I/O speeds, and integrate logic processes, with a long-term vision for 3D packaging where HBM stacks directly atop AI accelerators. As AI accelerators demand higher memory bandwidth and power efficiency, HBM’s packaging technology is becoming a key differentiator beyond just raw DRAM die performance. SK hynix’s aggressive push into hybrid bonding, specialized thermal management I-HBM , and potential 3D integration directly challenges competitors like Samsung and Micron, who are also investing heavily in advanced packaging to meet AI compute demands.