So I bought two new Dell s2415's today. I hooked them both up via HDMI - one to a Win 7 PC with a 7970 and the other a Win 8.1 PC with a 770. Hands down, the 7970 looks much better. The colors are brighter and sharper. There is more clarity. I swapped monitors and was relieved to see that both look better on the 7970 machine and I didn't just get a dud. Can anyone explain why the picture looks so much better on the older platform and older gpu? Is there anything I can do on the Nvidia side that will improve the picture? I installed the newest driver tonight from Nvidia.