HBF Emerges as a NAND-Based Bridge to Supercharge AI Inference

SK hynix and SanDisk unveiled High Bandwidth Flash (HBF), a NAND-based standard meant to sit between HBM and SSDs. Stacking NAND dies to up to 512GB per configuration, HBF delivers 0.4–3 TB/s bandwidth and is designed to expand AI inference memory by storing large models that are impractical for HBM, while signaling interoperability with CPUs/GPUs via the UCIe interconnect. It is positioned to complement, not replace, HBM and to foster an ecosystem of compatible products for faster AI workloads.