Methods and apparatus relating to provide bimodal functionality between a coherent link and memory expansion are described. In one embodiment, a processor is coupled to one or more agents via a coherent interconnect. The processor is also coupled to one or more Dual Inline Memory Modules (DIMMs) via a link logic. The logic supports read or write commands directed at the one or more DIMMs based on a single bit of data. Other embodiments are also disclosed and claimed.