The ODSA OpenHBI or Open High Bandwidth Interface specification defines a high-performance die-todie or chiplet-to-chiplet interconnect on a medium such as a silicon interposer or equivalent technology in a common package.
The OpenHBI defines an optimized C2C interface specification which is compatible with DWORD channel and interoperable with HBM3. It is intended for datacenter, HPC, AI, networking and other applications that demands high performance, high bandwidth density, low latency and energy efficient (low pJ/bit) C2C interconnect.
It has provision for interoperability, manufacturability and testability between heterogenous chiplets, especially for chiplets from different vendors, at co-packaging level.
