Just moments ago, a reddit user posted a BIOS which allows used to flash their GTX 680 into the upcoming GeForce GTX 770. Theres a second update on the GeForce GTX 770 straight from Semiaccurate who have somehow gotten a Radeon HD 7970 GHz slide which compares its performance against the GTX 770.
via N4G: pc news feed http://n4g.com/news/1254014/amd-radeon-hd-7970-ghz-slide-gives-a-hint-at-geforce-gtx-770-performance
via N4G: pc news feed http://n4g.com/news/1254014/amd-radeon-hd-7970-ghz-slide-gives-a-hint-at-geforce-gtx-770-performance