I have a new article up at ECN Magazine about a microprocessor that can do 90 billion instructions per second for a power cost of about 1 watt. Pretty good huh? It gets better. The chip has 144 processors in the package and when they are all idle the chip uses only 14 microwatts.
GreenArrays (the company that makes the chip) has partnered with another company to make the processor available to hobbyists.