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).
More aboutcolor calibration
What cable are you using to connect the monitor to the card? Which driver version are you using?