this thing be a beast , everything I have throw at it have not slow it down one bit , and this have the dual bio switch one flip and it unlock the extra shader to make this a 6970 ! the switch be located next to the crossfire connector very small I have to use a small pick to switch it , I use gpu-z to check for the shader unlock . plus this thing overclock like a beast too get to 900\/1400 gpu\/memory pass furmark with no artifacting , gonna try for higher but really do not think I need to it blow throw everything , and temp be amazing too , idle at 28c-30c and max be 60c-63c but it rarely see Max only when benchmarking . so glad I buy this one instead of another brand just the fact that I can unlock it to a 6970 spec be well worth the money and the ability to over clock be amazing , highly recommend this card . p.s. make sure to uninstall all you previous graphic driver and download the latest from amd 's website this be the cause of most of you bsod and other strange thing happen when you install a new graphic card .