Re: Is it worth it?
I would wait and get a DX11 card at this point, but as to the game question there are several games I cannot max, but it depends on what you want from them and what res and settings you need.
If you are one of those people who don't care about AA, or because of your lower res, then you might not need to upgrade. Still, lately games have been demanding more and more of my system and I would say an upgrade would definately benefit the average gamer with an 8800 right now.
But again, I would get a 300 series or 5000 series at this point.
I gots one of them high powered gaming computers with an EVGA GTX 480 video thingy and a Q9550 processing device and also one of them Windows 7 64 operating programs with 4GB of some Corsair 1033 DDR2 ram.
Steam, Xbox Live and PSN: StingingVelvet