Hello, I wanted to know, which do you think would win? I want to upgrade to a GTX 760 SLI (already have one) but I need a new case and a new mobo which in total cost 180 dollars, with the GPU 440 dollars. Or should I just wait like a year or two for the R9-290x. I heard that GTX 760 SLI beats GTX 780 and TITAN. So which one. Also, how much should the R9-290x decrease in a year or two since I heard it should be around 600-750 dollars. thanks in advance!