Sandisk and SK hynix Release HBF Specification
Sandisk and SK hynix have launched the High Bandwidth Flash technical specification through the Open Compute Project for AI accelerators.
Sandisk Corporation and SK hynix Inc. released the High Bandwidth Flash (HBF) technical specification through the Open Compute Project (OCP). Developed since February 2026 with Google and Tenstorrent, the framework integrates high bandwidth and capacity for AI inference systems. The open specification defines the system interface, electrical guidelines, xPU-HBF host interface, and reliability for HBF die stacks. Sandisk executives, including CTO Alper Ilkbahar, CRO Jim Elliott, and CPO Khurram Ismail, will present at the FMS conference in Santa Clara. A keynote is scheduled for August 5, followed by an August 6 panel hosted by Thomas Coughlin with Sandisk, SK hynix, and Google representatives.