X-bit Labs has taken a look at tessellation and compared performance in a couple of games, you can check it out over here.
Evolution or revolution? Some say that hardware tessellation is just another PR technology that is not going to bring anything new to the table. Others are convinced that tessellation implementation is as much of a deal as an introduction of high dynamic range lighting. In this article we are going to look at contemporary Tessellation technology supporting applications, in order to determine how much of a difference it makes and how much GPU computing power you have to sacrifice for it.