I&#x27;ve got a 980 GTX running on Ubuntu 14.04.3 and it&#x27;s pretty good overall.  I can play most games at a decent framerate in very high quality @ 2560x1440.  It can run Portal at 4K, no problem.  The rig I have is pretty new and cost just over £2000 though.  I&#x27;ve had less impressive results with lower spec&#x27;d hardware.  As with all things gaming&#x2F;hardware related, YMMV.