Hello everyone! been reading posts on here for awhile now. Now I need help....I have a sapphire redeon hd 5770 and I want to figure out if I flash a new bios on it can I unlock the voltage control? or is it even possible to unlock it? I am running it @1002/1333 my memory wont go any higher or i get lines or crashes but I know if I up my volts than I can at least set the core higher. And I dont know why Im hitting a wall @ 1333. I have read ppl getting thier cards up to 1100/1450