Nvidia has updated its standalone graphics drivers for GeForce and Quadro cards to 10.8.3. Please note that these drivers should be considered experimental. If you aren't having any issues, do not install- the native OS X drivers work great for most people.313.01.01f032013.05.15Mac OS X Mountain Lion 10.8.321.6 MBInstallation and removal instructions for the drivers are provided in the Additional Information section at the link above. If you do end up testing, report your findings in the comments!