Core HBFPrimary sourceSpecification announced
Catalog record / 3 Aug 2026
The first HBF specification package is announced
The companies announced an initial OCP HBF specification covering stack capacities up to 512 GB, three bandwidth grades, a UCIe host link, packaging and reliability, and software I/O guidance.
Why it matters
This is the strongest public specification milestone so far. The announcement says the work is openly available; this catalog has not yet located a stable public URL for the specification document itself.
Exact source title
Sandisk and SK hynix Announce First HBF Standard Specifications
Tags
Reading rule
This record preserves the source's maturity label. A roadmap, research result, or announced specification should not be treated as independent evidence of shipping hardware.