GNU/Linux Ubuntu 18.04 Install MSI GTX 1660 SUPER Driver
How to Install MSI GeForce GTX 1660 SUPER Driver for Ubuntu 18.04 Bionic.
The MSI GTX 1660 SUPER Ubuntu Bionic Driver Setup is a breeze, requiring just a few straightforward Shell Commands to complete.
Especially relevant: this is the Recommended Ubuntu Driver Setup procedure for All the GeForce 1660 SUPER powered CPUs.
Finally, with the nvidia-settings Tool you can configure Brightness, Gamma, XVideo attributes, Temperature, and OpenGL.

MSI Geforce 1660 SUPER Driver Ubuntu 18.04 Setup Guide