SK Hynix is working on next-generation high-bandwidth memory for AI systems, with multiple updates spanning HBM4 and HBM4E. TechNode reports that SK Hynix plans to produce HBM4 using TSMC’s 3nm process for major clients in the second half of 2025, with a prototype expected in March 2025. Separately, SK hynix says it has started shipping samples of HBM4E, its next-step memory product. Korea Times, PR Newswire, The Next Web, and GSMArena.com all report that SK hynix delivered 12-high (12-layer) HBM4E samples to major customers on schedule.
Across the sources, HBM4E is described as a 12-layer stacked design that targets AI processors and accelerators. Reported performance figures include up to 16Gbps per pin, along with improvements in power efficiency and reduced latency. PR Newswire adds that SK hynix uses Advanced MR-MUF, citing a reduction in heat resistance and improved stability. Meanwhile, Korea Times notes that Samsung’s HBM4 sales surpass $1 billion four months after it began mass production and shipments in February, with expectations for further revenue growth tied to next-generation AI accelerator platforms.