I recently added second card too my rig. It works great only one problem, the heat. My first card had temputures as high as 81 C° and my second at 75 C°. Witch is a little high for my taste. So I decided too up the fan speed. I started runing it at 60 (only when gaming). And worked wonderds, my first card started too run at 75 C° and my second at 60 C°.But I heard that runing a gpu fan at full speed will shorten it´s life. Will this apply if run it at 60 (only when gaming) too? And by how much will it be shortened?