Embodiments of the present invention include detecting one or more memory modules coupled to a memory controller via a memory channel. A total power requirement for the one or more memory modules is determined. A voltage regulator module set point of the memory channel is adjusted based at least in part on the power requirement for the one or more memory modules. The voltage regulator module provides power to the memory modules and is characterized by an optimal load current value where the voltage regulator module operates at a peak efficiency. An operating mode of the memory controller is determined. Based on determining that the memory controller is operating in a first mode, the commands serviced by the one or more memory modules are throttled by the memory controller to keep a load current of the memory channel within a range of the optimal load current value.