I recently just purchased 2x Sapphire Toxic 6950 2GB video cards. I installed them today, installed most up to date BIOS on my motherboard, Installed most up to date Drivers + Profiles patch, Installed Sapphire Trixx (I don't think i like this tool much but more on that later), and went to look at GPU-Z and they're showing 1408. So i shut down my computer, flip the switch on both cards, and low and behold boot up with GPU-Z showing 1536 shaders on both! *Happy Day!* My problem however is that after switching bios's back and forth and running multiple tests of Furmark & 3D Mark Vantage I get massive amounts of artifacts on the unlocked shaders bios, and none on the 1408. I have enabled the 20% boost in AMD Overdrive and that's the only change i've made there. As for Sapphire Trixx I up'ed the #'s to 925/1425/1.2V on both with a Custom fan setting to keep the cards at around 60c. Is there anything else i can do to try and get the shaders to work properly for me??? Any help would be appreciated.