I may have found a graphics card that I am looking at purchasing. I am wondering if I need to get one or two cards with the gaming I do. Would one graphic card stress out the one? What are your thoughts?

GIGABYTE GeForce GTX 650 Ti OC 2GB GDDR5 2x DVI / HDMI / D-SUB PCI-Express 3.0 Graphics Card Graphics Cards GV-N65TOC-2GI