So, in anticipation of getting a GTX 1070 later this summer, I bought a Dell S2716DG 27" monitor as it was at a pretty good price on Amazon. I just received it now, and havent' been able to get my PC to switch to 2560x1440. I have a 6850 - does it even support 2560x1440? If yes, how can I get switch it to that resolution from the Win10 recommended 1920x1080 resolution?