You've run into a common misconception here. I didn't know about it myself until I read about it in this forum. 120hz TVs don't take 120hz signals - they take 60hz input from a dvd player (or computer, etc.) and interpolate frames to get 120hz, generally adding input lag in the process. To get true 120hz for PC games, you need a 120hz monitor and either a dual-link DVI or DisplayPort cable. 120hz monitors usually also support active 3d with shutter glasses, but often allow you to use 120hz in 2d mode. However, for that, you should look at your video card and find out if it can push well over 60fps in your games. If not, I wouldn't expect the 120hz to be a significant benefit.