GNU/Linux CentOS 8/Stream Installing NVIDIA GeForce RTX 3070 Driver Guide
The linked tutorial shows you step-by-step How to Install NVIDIA GeForce RTX 3070 Graphics Driver on GNU/Linux CentOS 8/Stream desktop.
The NVIDIA GeForce RTX 3070 Driver CentOS 8/Stream Setup is a breeze, requiring just a few straightforward Shell Commands to complete.
Especially relevant: following the NVIDIA Recommendations is better to use the tested NVIDIA Linux Graphics Driver from the CentOS NVIDIA Driver Repository.
Most noteworthy: currently the needed NVIDIA 465.24+ Driver is Not in any CentOS Release Repo so here we provide to the Proprietary Linux Driver Setup.
Then with the nvidia-settings Tool you can configure Brightness, Gamma, XVideo attributes, Temperature, and OpenGL.

How to Download and Install the Latest NVIDIA 465.24+ Driver in Linux CentOS 8