SK hynix says it has shipped samples of 12-high high-bandwidth memory 4E (HBM4E) to major customers for next-generation AI processors. The company states the samples are delivered on schedule and that it will work with partners to move toward mass production “in a timely manner.” HBM4E is described as the seventh generation of high-performance DRAM used in GPUs and other AI accelerators. SK hynix says the 12-high configuration offers improvements in both performance and power efficiency, including a maximum data-transfer speed of 16 gigabits per second (Gbps) per pin. According to the company, HBM4E uses advanced technology intended to improve thermal characteristics and stability, including reported reductions in heat resistance compared with prior designs. The Korea Times also notes the broader roadmap for related HBM generations, describing HBM4’s use in Nvidia’s Vera Rubin platform and expectations that HBM4E will be used for the subsequent Vera Rubin Ultra platform. Overall, the reporting aligns that the HBM4E samples are being prepared for partner evaluation ahead of production.