SK hynix has commenced shipments of 12-layer HBM4E memory samples to major clients, advancing its timeline by several months. The new modules deliver 48GB capacity and speeds up to 16 Gbps per pin, with power efficiency improving over 20% compared to previous generations.
The performance gains rely on Advanced MR-MUF packaging technology, which reduces heat resistance by 17%. This thermal management is critical for maintaining reliability under sustained AI workloads in high-density stacked memory architectures.
Originally scheduled for late 2026, development accelerated sufficiently to begin sample distribution in June. Samsung Electronics initiated similar shipments three weeks prior, featuring equivalent bandwidth capabilities of 3.6 TB/s.
SK hynix currently commands approximately 57% of industry revenue. Both manufacturers are now undergoing customer qualification phases that will determine production allocation for 2027 volume manufacturing.
Nvidia remains the pivotal customer in this hardware race. The increased memory density allows for greater accelerator capacity without expanding physical footprints, directly supporting next-generation GPU architecture requirements.