SK Hynix Samples HBM4E With 48 GB Capacity and 16 Gbps as AI Chip Demand Forces DRAM Makers Into Overdrive - Wccftech

SK Hynix has initiated sampling of its next-generation high-bandwidth memory (HBM4E), offering up to 48GB capacity and 16Gbps data transfer speeds. This development comes amid a surge in demand for AI... Read original →

SK Hynix’s early sampling of 48GB HBM4E signals a shift in the AI memory race—from raw specs to system-level co-design. Its MR-MUF stacking and 16Gbps speed force TSMC and Samsung to accelerate 3nm packaging integration and compel NVIDIA and AMD to redesign memory controllers for Rubin Ultra and MI500. Tightening U.S. export controls on advanced packaging tools raise yield ramp costs for non-U.S. DRAM makers, giving SK Hynix—already proficient in EUV—a temporary edge. Samsung will likely counter with HPB innovations, but any HBM4E yield delay risks its AI server share erosion by 2027. Over the next 18 months, HBM will evolve from a peripheral component to a decisive battleground for AI chip architecture leadership, where bandwidth efficiency directly dictates training ROI.