I currently have two HD 2600 XT's installed in my system. I have them connected via one crossfire connector. Should I use two? I have crossfire enabled in Catylst but I am not sure if it is working properly. The way I see it is that I should be able to see both cards in the drop menu on the diagnostics screen. I should mention as well that one of the cards is a genuine ATI brand and the other is a Sapphire brand. Does this matter? I understand that it shouldn't as long as the cards are the same model. I guess my question is: how can I prove that crossfire is actually working? I have tried various games with and without crossfire enabled in catalyst but I have not noticed a difference in game performance.
I don't need sarcastic or childish remarks, just some good advice.