I've hooked both cards up in my EVGA X97 FTW MB in slot 1 & 2 and connected my SLI bridge. I do have a EVGA 750ti FTW on the 3rd PCI-E slot as a dedicated PhysX card. I turned the computer on and both the Nvidia Control Panel and Device manager both pick up all 3 cards. I went into Device manager and updated the drivers on the 2nd card in SLI. Then in the Nvidia Control Panel I set the 750TI for dedicated PhysX and tried to activate SLI "Maximize 3d Performance" but that option was not there. When I go into "Configure Surround, PhysX it shows all 3 cards but has the HDMI going from card 1 to my samsung tv. If SLI was enabled wouldn't it show both 780's connected? I also checked in "manage 3d settings" and there was no option that I could see for SLI. Any help would be much appreciated!