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 30-second section near the start.
Synthetic benchmarks don't always tally-up with real-world games, though. In Bioshock Infinite, Sapphire's R9 290X Tri-X is a smidge quicker than reference, and more importantly, able to keep comfortably ahead of the stock-clocked GeForce GTX 780.