Phoronix posted a review on the NVIDIA GeForce GTX 680 "Kepler" videocard running under Linux

After some delays in getting the hardware, we finally have our extensive review of the NVIDIA GeForce GTX 680 "Kepler" graphics card with testing and benchmark results under Ubuntu Linux. The NVIDIA GeForce GTX 680 is one mighty performer and pleasing open-source customers will be the independent option of being able to use this inaugural Kepler graphics card with the open-source, reverse-engineered Nouveau driver.

  NVIDIA GeForce GTX 680 "Kepler" On Linux