With the NVIDIA GeForce GTX 650 Linux review out of the way, I carried out some benchmarks comparing the performance of the open-source "Nouveau" driver to NVIDIA's official closed-source Linux graphics driver on this Kepler-based GK107 GPU. If using the Nouveau driver as found by default on Ubuntu Linux and others, you can expect the performance to be less than 20% that of the official NVIDIA Linux driver.