Hey everything I have two Graphics cards both from NVidia And without SLI, or cross fire my motherboard is the Tomahawk b350 that supports crossfire but NVidia cards do not support that I have been reading that there is no performance boost when placing two graphics cards in your system without SLI, or crossfire When I placed my older card GTX 660 into my computer last night I noticed my games were extremely smooth on ultra settings ( Titan fall 2 ) ( The Witcher 3 ) etc. can anyone please tell me how this is happening somehow the cards are working together. thanks in advanced