nvidia gtx 1080 ti

How would the 1080ti (MSI GTX 1080 ti Gaming X Trio) perform with a triple 27" 1440p monitor setup? The resolution would be 7680 x 1440 I wont be playing any competitive games in that setup, it'll be mostly older games like Skyrim Legenday Edition (Heavily Modded) Metro redux NFS MW 2012 NFS...

I am trying to upgrade my dell precision t3610 with an NVIDIA gtx 1080ti. I got a power supply of 685 watts from dell, but the problem is the proprietary power supply (it is a hot swap that feeds power to a little board which has two 8 pin female connectors and one 24 pin female connectors)...