Hi I have a radeon r9 280x plugged into my MSI 970 and was considering getting a second graphics card because I have 3 monitors, and although it works extremely well on its' own there are a few games I'd like to push the limits with. The problem is that in the 970 there is simply no room for a second r9 280x. The only slot with the correct placement and size to poke out of my corsair carbide 500r mid tower case is directly underneath the r9 280x and would literally be stacked against it so that's a no go. In addition the bottom slot obviously only fits a very small card as the USB 3.0 and other wires in the MSI are sticking out next to it. So the only available slot is the second from the bottom and still can only support a smaller card. Is there anything compatible with the r9 280x that I could bridge with it? I know there are specifications as to what can work together and I'm not savvy enough to do the homework on my own. I also have a 650w psu, please let me know if that could sustain two cards or if I'd have to upgrade. I apologize if I said anything stupid, again not super savvy and don't have anyone around me with particular knowledge on this subject. Thank you for your time