Those games average around 30-40fps with a basic gtx 660 with settings set to ultra at 1600p. That doesn't even qualify as a fraction of the games out there however.
I only clicked 1 search result. There are plenty of others. With 1600p and highest ultra settings on this card, the most demanding games average between 30-40fps.
perhaps you are confusing the ti. if you looked at your link it has the "most demanding games" ie bf3 and crysis 2 in the 20-30's. aka not very playable. they have the aa at 4, which i would probably turn off and you could get close to playable in ultra at that rez.
less demanding games should be fine. crysis 3 at high gets 27 [guru3d.com]