Note that those are the
minimum requirements to get the game to play on your machine. That implies that your graphics are pretty much set to Low, with only the bare minimum of effects turned on to see fire on the ground.
If you want to play the game at maximum potential, you need to invest in a DX11-supporting video card, among other things. Your best bet would be to ask in a forum for computer building/modding to get the general idea of what you need to do to get your machine amped up.
Ask around in this forum, for instance.
http://www.mmo-champion.com/forums/290-Computer