After many years of experimenting, tessellation has become critical in visual presentation. Popular games like Alien vs. Predator™ and Metro 2033™ use tessellation to produce smooth-looking models, and you need a powerful graphics card to get the full effect. ASUS graphics cards deliver revolutionary performance in DirectX 11’s most important new feature, GPU-accelerated tessellation. By allowing more detailed geometry to be packed into a scene, tessellation smoothes out blocky edges, allowing characters to be rendered with cinema-quality detail.

Also important to note about DX11:
．more sophisticated animations ．details on all edges ．realistic Shadows
And since tessellation is only applied when necessary, game performance is not compromised.