I don't know the program you are using and what it favors (you might want to look up info on the software and what it likes). All Dx11 cards use Ambient occlusion. That means the gaming cards by AMD Radeon HD series 5000 and 6000, as well as Nvidia's Geforce 400 and 500 series.
For what you are looking it, you may be looking at the professional line of cards, which are much more costly. Such as the Nvidia Quadro and the AMD FirePro cards. I don't know a lot about these.