CCX

AMD Zen Core CCX (CPU Complex)

In AMD CPUs, CCX is an acronym used by AMD to refer to the Core Complex used in AMD’s Zen architecture based processors. Each CCX is a modular unit which contains four Zen cores connected to a shared L3 cache. Multiple CCX are then connected together using AMD’s Infinity Fabric interconnect to then create processors. For example, AMD’s Ryzen 7 processors contain two CCX while AMD’s EPYC 7000 processors contain four CCX.