(p.p mguire maybe some people are limited with an agp slot like me, and want to have one last great agp card.)
(@Nissanspecv04) ok well you need to read this link here. and remeber you might have 4 bad pipes so when u unlock it to 16 pipes and the video card is not stable and reveals artifacts, when u try and lock them back u might lock the wrong set of 4 pipes so i am warning you! becarfull. seriously, oh yea your video card right now gets 6000 texiles per second if you unlock it you will be getting 8300+ so you will be pissing on the 6800 ultra and ofcourse p.p meguires 6800gt lol no offense p,p. but anyways heres the link.
also if the link above doesnt do it for you heres another the one i used, here ya go. and good luck lol