Even though the PPA is probably the most stable way of upgrading to the latest proprietary Nvidia drivers version in Ubuntu, it's still considered in testing. That means issues may still occur (though I didn't encounter any and I've been using it for some time), so you should only use this PPA if you have experience with recovering your system from a failed graphics driver upgrade.
Install the latest Nvidia graphics drivers in Ubuntu via PPA
1. Add the PPA.
sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt update
2. Install (and activate) the latest Nvidia graphics drivers
After the driver is downloaded and installed, restart your system. That's it!
apt-cache search nvidia
apt search nvidia
via Web Upd8 - Ubuntu / Linux blog http://ift.tt/28VbHWP