The user puts on their computronium jewelry each morning, and charges it on an induction pad each night; during the day the processors within work ceaselessly, computing nothing.
Computronium is a material hypothesized by two professors at MIT, it is "programmable matter" or matter which computes, you could argue that both a computer processor and the human brain are forms of computronium. In the future portrayed by Computronium Jewelry this material is worn by individuals for its own sake purely as an ornament. What will our computers look like when they are fast enough to do anything we want? How will these devices evolve when the selective pressure for speed and size disappears? In a broader sense, what does success look like when we have enough?
A more detailed breakdown can be found on my website.