Good morning. I can't seem to find a definitive answer to my problem. I selected my motherboard because it was SLI-capable. Unfortunately, when I upgraded from the gtx 580 to the gtx 680 4gb FTW card, I found that it was far thicker than the 580, and now almost completely covers the next slot available. http://www.gigabyte.com/fileupload/product/2/3976/7384_m.jpg As you can see in this photo, there is a third slot which would enable a second GPU. Here is the PCI-E specs for the mobo: 1 x PCI Express x16 slot, running at x16 (PCIEX16) * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.1 x PCI Express x16 slot, running at x8 (PCIEX8) * The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x8 mode.1 x PCI Express x16 slot, running at x4 (PCIEX4) * The PCIEX4 slot shares bandwidth with the PCIEX1_2 slot. When PCIEX1_2 slot is populated, the PCIEX4 slot will operate at up to x1 mode.So, my question is, will the 3rd slot run at x1 mode, and is that too slow for me to use for SLI?