Rachel Feltman on the possibility of using magnetite in the future instead of silicon:
Researchers showed that magnetite’s on-off electrical switch could be flipped in one-trillionth of a second—thousands of times faster than in transistors used currently. In theory, a computer made with magnetite chips instead of silicon would be that much faster than the machines we use today. But since magnetite has to be cooled to a chilly -190 °C (-310 °F) to lock its electrical charges into place, it’s not going to end up in your computer anytime soon.
The far off future.