I got my PC two days ago, and the games I have already tried (SMG 1+2; New Super Mario Bros.; Wii Sports Resort; MKD) worked with 3xIR and 9xSSAA fullspeed, but I lowered it to 4xSSAA because it's absolutely sufficient.
So I can say I'm glad that I went with the GTX 770
So I can say I'm glad that I went with the GTX 770