BioShock Infinite
Making a really good case for game of the year already, BioShock is fantastically playable and looks great on the PC. We benchmark a 40-second section near the start.
As a result of the out-the-box overclock - and, more importantly, the lofty GPU Boost capabilities - EVGA's GTX 780 Superclocked trades punches with Titan in most modern titles. There's hardly anything separating the two in BioShock Infinite.