I just finished a new build with my first nVidia card. First thing I noticed in BF3 and Chivalry was that the colors were a little washed out and flat, and the blacks are not solid black. In the map loading screen for BF3, the blacks around the edges were almost a mid-gray.
For comparison I went back to my old system and played the same game and it was definitely a little more "true" with the blacks, whites, contrast, and gamma.
I've tweaked it a little but I'd really like to know how I can calibrate it with accuracy because I also work in Photoshop. Its also not the monitor (Acer H233H).