Hi google over the Internet and I found this information about the HD8990 coming in 2013
see here for details
http://www.youtube.com/watch?v=Ju7-F9-SA9s
hmm, looks like it twice as fast as the 6990 , and 50 % than the 7990 ?
see here for details
http://www.youtube.com/watch?v=Ju7-F9-SA9s
hmm, looks like it twice as fast as the 6990 , and 50 % than the 7990 ?