1. A method comprising: receiving at an interface to a simulated memory device, a control signal sent to control the simulated memory device, where the simulated memory device differs in at least one aspect from a plurality of physical memory circuits; identifying at least one portion of the physical memory circuits that is not currently being accessed, the physical memory circuits including at least one other portion that is currently being accessed; and in response to identifying at least one portion of the physical memory circuits that is not being accessed, initiating a power saving operation in association with the identified at least one portion of the physical memory circuits, wherein the power saving operation includes delaying communication of the control signal from the interface to the identified at least one portion of the physical memory circuits to control the identified at least one portion of the physical memory circuits.