So I have the 15" MBP plugged into the U2711 via mini displayport to displayport cable. I see a picture and it is 2560x1440. I calibrated it with success with the Spyder3Pro. Now do I need to do anything else to enable 30-bit color? My GPU's an NVIDIA GeForce 9600M GT w/ 256MB VRAM and it is reporting that it is connected to my U2711 at the prescribed resolution at the pixel depth of 32-bit color. Is this the same as 30-bit color? I just realized it now... but can you use the 9400M on the built-in LCD while the 9600M GT drives the Dell?