Scalable Coherent Interface

High Quality Content by WIKIPEDIA articles! SCI, for Scalable Coherent Interface, is a high-speed computer bus that supports a variety of topologies, speeds and connection systems. It is used primarily in the high-performance computing market, where it is used to build NUMA computer clusters and other parallel architectures. In this role most systems use high speed networking devices, typically Gigabit Ethernet, but SCI is much "lighter" in terms of the protocol overhead, and can offer considerably higher performance regardless of the actual link speed.