I think I installed my sapphire tri-x 290 correctly. There was a 6 pin and and 8 pin on the GPU and I connected both of those to my PSU. The monitor cable is connected to the 290, but in dxdiag, under video, it says I am running Standard VGA Graphics adapter. I think it's working because I'm getting a display, but I'm not sure. When using PerformanceTest 8.0, I only got 20fps on a 2D test which seems very low for a i7 4790k and 290