Intel and AMD have spent billions trying to lower the energy consumption of their chips.
Yet disk storage is responsible for consuming 30 percent of the energy in a PC and up to 50 percent of the energy in a data center.
Disk drive companies have done very little.
Until now. Using metal foil.
A $24 10-gigabyte 0.85-inch drive can spin up, read or write data, then shut down again, all in less time than it takes to perform the same task using flash.