I've recently thought if it would make any difference to image quality if I used the DVI input of my Samsung LCD (SyncMaster 172x) instead of the RGB input. I have a Club3D 7800 GT, which only has a DVI output, but it came with a DVI to RGB adapter, which basically allowed me to use a RGB cable to connect it to the RGB input in the LCD.
The image quality in games always seemed great to me and I really don't know if it would make a difference to go from Analog to Digital. What do you think? It would be great if someone could show me 2 photos of a monitor displaying a game in DVI and RGB so I could see if there was really any substantial difference.