1. A motherboard with reduced power consumption, comprising: a memory module slot for connecting a memory module; a DDR (Double data rate) termination array, coupled to the memory module slot for providing a plurality of termination resistors connected between a voltage source and the memory module slot, wherein connections between the voltage source and the termination resistors are controlled according to an indication of a control signal; and a controller chip set, coupled to the memory module slot and the DDR termination array to provide the control signal, wherein when the motherboard enters a power saving mode, or before the memory module is inserted into the memory module slot, the control signal commands the DDR termination array to cut off the connections between the termination resistors and the voltage source.