Or the power it takes to continuously spin hard drive platters regardless of whether a data transfer is actually happening. Or, as stated in another subthread,

Or the power it takes to continuously spin hard drive platters regardless of whether a data transfer is actually happening. Or, as stated in another subthread, the reduced energy usage per gigabyte involved in transporting SSDs versus larger, heavier HDDs. If we're going to stress the numbers this minutely, then let's really stress them.