Here is a tessellation demo that nVidia has shown at GTC 2010 recently:
http://www.youtube.com/watch?v=Vz1Y5YkqgyQ
It should give you a good impression of what tessellation can really do, when the whole engine and geometry is designed for it (unlike many current titles, which are basically just console-ports with fake tessellation bolted on).
Note how shockingly low the detail is when the tessellation is disabled. All that detail is generated by the GPU on-the-fly, rather than being stored in memory.
http://www.youtube.com/watch?v=Vz1Y5YkqgyQ
It should give you a good impression of what tessellation can really do, when the whole engine and geometry is designed for it (unlike many current titles, which are basically just console-ports with fake tessellation bolted on).
Note how shockingly low the detail is when the tessellation is disabled. All that detail is generated by the GPU on-the-fly, rather than being stored in memory.
