Thanks for the replies.
I'm playing on 1920 x 1080. I am getting good fps, but when I am standing on the highest point of Whiterun and I am looking over Whiterun, the fps drop to 40 or below. I've also tested it on Assassin's Creed Revelations and I am having the same problem when looking over the city from the rooftops. I am getting good fps in Saints Row 3, but again when I am looking over the city or when there is a lot of objects in my field of view, then the fps drop to around 40. Battlefield 3 - no problem, getting 60 fps +.