My http://www.amazon.com/gp/product/B0079XWPEK/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1&tag=thelinactsho-20 Gets about 133.3 MH/s with bitminter on a core clock of 880 with any of the newer cataylsts I try on ubuntu 12.04.2+.