The present invention discloses a computer motherboard, which comprises: at least one memory module slot, a flash memory, a central processing unit socket; wherein, the memory module slot is used to plug at least one memory module; the flash memory is used to store BIOS programming codes, in which the BIOS programming codes are provided with at least one memory configuration programming codes for configuring the memory frequency and memory timing of the memory module; the central processing unit socket is used to plug the CPU, and the CPU is at least used to execute the memory configuration programming codes, so, after execution, they could provide a plurality of parameter options for memory frequency and memory timing of the memory modules to be selected one from them.