Hi guys, After weeks of trying to get my HD5850 crossfire setup to work I'm pretty much at the end of my tether. I've tried both cards just on their own and both work perfect, however when put in crossfire it slows games down tremendously. Taking black ops as an example, using just the one card the frame rate is actually HIGHER than when both cards are used. I'm so frustrated I've taken both cards out and just using a GTX470SC for the time being. I've tried things like turning on catalyst A.I. and I've monitored the cards in Afterburner. 3DMark vantage gives me a score of around 23000 for the GPU. The way I have set it up is 2 cards into the PCIe slots, with one crossfire bridge (Does it require 2?) Then I have HDMI output from one of the graphics cards. Is there anything wrong with the hardware aspect of my setup? ie. incorrect plugging of things etc. Any kind of help would be tremendously appreciated!