The GTX 660Ti is still capable of playing games at Ultra settings. See link below for benchmarks. There are exceptions though such as Metro 2033 since it is below 30 FPS and Hitman since it is below 40 FPS. Both at 1920x1080 resolution.http://www.techpowerup.com/reviews/ASUS/GeForce_GTX_670_Direct_Cu_Mini/6.html
Ultimately, it depends on what resolution you play at and what is the minimum FPS you are looking for. I think all gamers would agree at approx 22 FPS for Metro 2033 is too low to play. But I think a few would say that low 30's FPS for Hitman Absolution is still good enough for them.