NVIDIA GeForce GTX 680 "Kepler" On Linux
With the Xonotic results at 2560 x 1600, the GeForce GTX 680 was still operating about 10°C warmer than the Radeon HD 7950.
Besides being warmer, the GeForce GTX 680 was now going through about 40 Watts more power than the Radeon HD 7950.