I have a Dell 2709W rev 4. I currently run it with a DVI from an Asus 260. I am looking to upgrade my graphics card to something like the 5850. I have been told (read this on [H]ard OCP and some photo forums) that at the moment I will have 8 bit vis DVI but a display port capable card to the monitors dp input would give me 10 bit colour. Tthe monitor is an S-PVA calibrated with a Spyder and used amongst other things for photo editing. Some people claim this (10 bit) is slightly better for certain things, photo wise and suchlike, and some say you can't see the difference. Then people on Hard OCP and other forums are saying that DP gives less input lag ? (for gaming obviously) If these aren't worthy positives, I will consider an Nvidia card which probably won't have DP, which means waiting for Fermi or whatever its called. If its worth using DP I could get an Ati card now ?