When I have both of my gfx cards in, one being a X850XTPE mastercard, and the other being an X850XT(with VGA and DVI plugs) It detects crossfire, but wont let me enable it. When i plug my monitor into the DVI dongle, it doesnt turn back on, and I cant select Crossfire. Im not sure if I need this or not, but I heard that to do CF, you need a 2nd card with 2 DVI plugs.. This one only has 1. Im not sure how to activate this.. The card overclocks amazing, 585/630 on stock volts, and I'd like to keep it for my crossfire setup, but if I cant use it, my friend said that since it has amazing clocks, he'd swap his X800GTO2(Flashed to X850XTPE with R480 core) with my X850XT. What should I do???