400-AVFL Dell 2.4TB SAS 12Gb/S 256MB 2.5-Inch Hard Drive

Dell 2.4TB 10000RPM SAS 12Gb/S 256MB 2.5-Inch Hard Drive. Power consumption refers to the amount of energy a device or system uses over a given period of time, typically measured in watts (W) or kilowatts (kW). Efficiency, on the other hand, is a measure of how well a device or system converts energy into useful output.