http://en.wikipedia.org/wiki/Primal_Carnage
http://syndicatesofarkon.com
http://en.wikipedia.org/wiki/Afterfall_Universe
And it wouldn't surprise me if Crytek implement more agressive tesselation into their upcoming engine (Crysis 2 will showcase this).
I can also think of many (not rather daft) consumers that buy a gfx card for other reasons than "its just faster". IQ matters to a lot of people. I personally would be gutted to buy a new gfx card that couldn't perform very well at high AA levels, such as the 5870. performance dips wayy too much for my liking, I like my games smooth as silk and loking stunning. Otherwise I would not spend hundreds on a gfx card and get a console!!!
Errm, what you just said was for you the performance of a 5870 isn't high enough......... YOU WANT TO BUY A FASTER CARD. While also claiming its not just about wanting a faster card.
Higher IQ means more power, means you need a faster card.
Higher AA levels mean more power, means you need a faster card.
Huge tesselation usage means more power, means you need a faster card.
This was in claims that AMD users only bought 58xx's for tesselation and DX10.
I said that wasn't the case, you buy a new card because with AA/high quality effects enabled in new games, be them dx7 or dx 39, you'll need a faster card to be able to run the latest games. It would appear you agree with me, you didn't claim you wanted a card for a new FEATURE, like DX11, or tesselation, or unified shaders, or anything else, you wanted more power.
As for the games you list, the first, the video on the homepage is actually embarassingly bad, and due for release this year that vid should look HUGELY better. IT seems like a classic tech demo game, small multiplayer game by a indi studio, with crap grass, AWFUL dinosoar models, I mean they are embarassing by 10 year old standards, decent lighting(ain't hard to do) and the mountains look half decent WAY in the distance.
Ageia has previously made incredibly small tech demos based on their hardware and specific features, they are widely regarded as utter crap and no one plays them, the same features are yet to feature in "real games" years and years later. What you can do in a couple levels with a lot of time and effort does not reflect what you can include and run well in a real full sized game made for gameplay and story, rather than one effect.
The second game, looks even worse, the picture on its homepage looks closer to City of Heroes MMO look, than a heavily tesselated brand spanking new AAA title.
The third game you listed, well, their site isn't working, the game was due out, gamespot has three fairly awful looking screenshots of it and NO info on the game at all, another indi studio, suggest to me that game isn't coming out at all.
EDIT:- Yes, I'd also expect Crytek to add it into their latest engine, of course they are known for doing bleeding edge engines simply not playable on normal setups when released at higher detail levels, and only become more playable at higher settings a year or two later when you get........... not more feature cards but......... should we say it together...... a more powerful card.
Infact from Crysis's release, there were NO new features, the only new things cards had between its release, and today, that make the game more playable.......... is more power, its not using DX11, or tesselation, or new GPGPU instructions, it uses the same features as before and 2 or 4x the power as a couple years ago.
Its highly likely they'll include it in the latest game, and the heavy tesselation option along with the other high end options, won't offer a hugely playable game till another couple generations down the line. So I do ask, what good is the 480gtx supposed tesselation power if, you'd have to wait for a 680gtx in 18 months, to use it at a playable framerate?