yum install kmod-nvidia-304xx
Loaded plugins: fastestmirror, langpacks
Determining fastest mirrors
epel/x86_64/metalink                                     |  18 kB     00:00    
 * base: repos.lax.quadranet.com
 * elrepo: muug.ca
 * epel: mirrors.develooper.com
 * extras: mirror.hostduplex.com
 * nux-dextop: mirror.li.nux.ro
 * updates: repos.lax.quadranet.com
adobe-linux-x86_64                                       | 2.9 kB     00:00    
base                                                     | 3.6 kB     00:00    
elrepo                                                   | 2.9 kB     00:00    
epel                                                     | 3.2 kB     00:00    
extras                                                   | 3.4 kB     00:00    
nux-dextop                                               | 2.9 kB     00:00    
playonlinux                                              | 2.9 kB     00:00    
skype-stable                                             | 2.9 kB     00:00    
updates                                                  | 3.4 kB     00:00    
(1/12): adobe-linux-x86_64/primary_db                      | 2.7 kB   00:00    
epel/x86_64/updateinfo         FAILED                                          
http://mirror.texas3006.com/epel/7/x86_64/repodata/e313d1001f8222fe9be4371c60b085c24b6e84dec37c06e5aae99b6f6ac54c0d-updateinfo.xml.bz2: [Errno 14] HTTP Error 302 - Found
Trying other mirror.
(2/12): epel/x86_64/group_gz                               |  88 kB   00:00    
(3/12): base/7/x86_64/group_gz                             | 166 kB   00:01    
(4/12): extras/7/x86_64/primary_db                         | 153 kB   00:01    
(5/12): playonlinux/primary_db                             |  24 kB   00:00    
(6/12): elrepo/primary_db                                  | 627 kB   00:04    
(7/12): skype-stable/primary_db                            |  12 kB   00:00    
(8/12): epel/x86_64/updateinfo                             | 934 kB   00:03    
(9/12): updates/7/x86_64/primary_db                        | 1.3 MB   00:07    
(10/12): nux-dextop/x86_64/primary_db                      | 1.8 MB   00:12    
(11/12): base/7/x86_64/primary_db                          | 6.0 MB   00:21    
(12/12): epel/x86_64/primary                               | 3.6 MB   00:20    
epel                                                                12725/12725
Resolving Dependencies
--> Running transaction check
---> Package kmod-nvidia-304xx.x86_64 0:304.135-6.el7_6.elrepo will be installed
--> Processing Dependency: nvidia-x11-drv-304xx = 304.135 for package: kmod-nvidia-304xx-304.135-6.el7_6.elrepo.x86_64
--> Running transaction check
---> Package nvidia-x11-drv-304xx.x86_64 0:304.135-1.el7.elrepo will be installed
--> Processing Dependency: xorg-x11-server-Xorg <= 1.19.99 for package: nvidia-x11-drv-304xx-304.135-1.el7.elrepo.x86_64
--> Finished Dependency Resolution
Error: Package: nvidia-x11-drv-304xx-304.135-1.el7.elrepo.x86_64 (elrepo)
           Requires: xorg-x11-server-Xorg <= 1.19.99
           Installed: xorg-x11-server-Xorg-1.20.1-5.1.el7.x86_64 (@updates)
               xorg-x11-server-Xorg = 1.20.1-5.1.el7
           Available: xorg-x11-server-Xorg-1.20.1-3.el7.x86_64 (base)
               xorg-x11-server-Xorg = 1.20.1-3.el7
           Available: xorg-x11-server-Xorg-1.20.1-5.el7.x86_64 (updates)
               xorg-x11-server-Xorg = 1.20.1-5.el7
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest