You could've built three, possibly four top gaming rigs for that....
As mentioned no ssd?
And having your O/s on a 2Tb drive is, well silly to be polite,
Graphics has been covered,
Serious overkill on the Psu and ram as well,
Did you build this yourself?
Well your computer wasn't designed to play games well, but make sure you are using the latest Firepro drivers from AMD it can play games though not very well compared to 90% of all gaming GPU's. You might try and build a seperate cheaper machine for gaming if you are using that for work (Maya, max etc). As switching out that card for a gaming card will seriously kill your performance in those applications and also cause rendering issues in the program and introduce bugs.