Whatisgoingonherethen :
So I have just got my system running and i'm unsure on how to install drivers for my gpu. My gpu is the r9 290. Do I have to uninstall things first or can I straight away just download the new mantle driver? Any help here?
They are already installed as part of the normal catalyst drivers. It's up to the game developers to implement it and enable a toggle in the settings of the game. For example in BF4 this guide explains how to toggle it http://battlelog.battlefield.com/bf4/news/view/bf4-mantle-live/