How to install video driver fglrx64_p_i_c-15.302-1.x86_64_rhel7_64a.rpm is an article that explains how to install the driver on centos.
The key thing before you start reading this tutorial is that you know exactly what you're doing. You must first make sure that the driver fglrx64_p_i_c-15.302-1.x86_64_rhel7_64a.rpm is appropriate for the video card mounted on your pc, on video cards the same, if the card is not exactly that for which it is designed this driver, this article may be harmful.
Once upon a time there was a script that when it was started, downloaded and installed the correct driver, by detecting the type of hardware. Unfortunately, no one knows anything about, and it seems that has been discontinued and is no longer used. I don't know if the project was abandoned to be honest. And then I don't know if this script covers the installation of the video driver fglrx64_p_i_c-15.302-1.x86_64_rhel7_64a.rpm
I used the following code on a machine with CentOS 7.3 just installed. Then we begin to insert the following commands in a test machine clean