I have installed Ubuntu 12.10 64bit and the default driver for my Nvidia GTX670 is an open source XorgX. I intend to play games on Wine.
What driver should I use?
You could try the proprietary Nvidia drivers:
sudo apt-get install nvidia-current
also try:
sudo apt-get install nvidia-current-updates
Either of these should also install nvidia-settings which you can run to configure the display.
I have found the default Nouveau driver to work reasonably well however, and have not had much luck with the proprietary drivers on my GeForce 5160SE card so far.
In the case that the nvidia drivers do not work, you can remove them with
sudo apt-get remove nvidia-current
and
sudo apt-get remove nvidia-current-updates
Just for good measure, re-install the nouveau driver and let it re-configure.
sudo apt-get --reinstall install xserver-xorg-video-nouveau
