http://phys.org/news/2014-08-optalysys-prototype-optical-processor.html (http://phys.org/news/2014-08-optalysys-prototype-optical-processor.html)
"UK-based startup Optalysys is moving ahead to deliver exascale levels of processing power on a standard-sized desktop computer within the next few years, reported HPCwire earlier this week. The company itself announced on August 1 that it is "only months away from launching a prototype optical processor with the potential to deliver exascale levels of processing power on a standard-sized desktop computer." The company will demo its prototype, which meets NASA Technology Readiness Level 4, in January next year."
Wow. I wonder what the price will be like to start off