[News] SK hynix Reportedly Pulls Forward HBM4E Sample Timeline, Eyeing June–July Shipments to Key Customers - TrendForce

SK Hynix is reportedly accelerating its HBM4E development and planning to deliver samples as early as this month or by July at the latest, aiming to secure key customers ahead of competitors. This mov... Read original →

SK hynix’s accelerated HBM4E sampling isn’t merely a tactical counter to Samsung’s late-May delivery to NVIDIA—it triggers a cascade across the AI memory stack. The 1c DRAM paired with TSMC’s 3nm logic die demands reallocation of CoWoS, TSV, and advanced packaging capacity, inflating BOM costs. Geopolitically, tightening U.S.-EU export controls on advanced memory force Korean suppliers to build compliance buffers for shipments to China, raising operational complexity. Samsung will likely respond by fast-tracking its 4nm-based HBM4E with 1b DRAM and bundling it with its own AI SoCs. Over the next 18 months, HBM4E becomes the de facto performance gatekeeper for AI accelerators; securing Rubin Ultra validation in late 2026 effectively locks in 2027 volume contracts and defines who controls the memory gateway to next-gen AI training infrastructure.