Intel's Ct
paper on what they say it can do: http://techresearch.intel.com/userfiles/en-us/File/terascale/Ct-appnote-option-pricing.pdf
current state of the project: http://www.informationweek.com/news/software/development/showArticle.jhtml;jsessionid=YGSAFBMLVE0A4QSNDLPCKH0CJUNN2JVN?articleID=208403616
Intel Research Ct whitepaper - http://techresearch.intel.com/UserFiles/en-us/File/terascale/Whitepaper-Ct.pdf
also Whitepaper-Ct.pdf