SK Hynix, the world's top HBM supplier to NVIDIA, has unveiled plans to invest 19 trillion won ($13 billion) in new advanced semiconductor packaging and R&D facilities globally. The company will plow $3.87 billion to build advanced packaging and research facilities for AI chips in Indiana, marking the first HBM assembly facility on US soil. With the addition of the Indiana hub, SK Hynix will operate three advanced packaging hubs globally—in Icheon and Cheongju near Seoul, plus West Lafayette, Indiana—reinforcing supply chain resilience as customers demand faster and more reliable AI memory deliveries.
SK Hynix told investors that its advanced packaging lines are at capacity through 2026, and Micron faces a similar bottleneck. As HBM stacks increase from the current 12-16 layers to 20 layers and beyond, the precision and yield of advanced packaging processes will largely determine competitiveness. Industry executives say packaging technology can enhance semiconductor performance without requiring further nanometer shrinks, which are technologically challenging. The investment signals packaging—not just fab capacity—has become the critical constraint in the AI memory race.
SK Hynix's move follows news that HBM4 production from all three suppliers is expected in late 2025 to 2026. The new facilities will support HBM4 and beyond, with customized base die configurations emerging as a differentiation layer. For architects scaling AI infrastructure, this bottleneck means multi-year lead times on HBM supply and confirms packaging partnerships and regional allocation are now decisive factors in data center deployment timelines.