A reconfigurable high speed memory chip module includes a type of memory cell array group, a first transmission bus, and a logic unit. The type memory cell array group includes multiple memory cell array integrated circuits (ICs). The first transmission bus coupled to the type memory cell array group has a first programmable transmitting or receiving data rate, a first programmable transmitting or receiving signal swing, a first programmable bus width, and a combination thereof. The logic unit is coupled to the first transmission bus for accessing the type memory cell array group through the first transmission bus.