Anyway, skunkmod #1: I get 44.5 Mh/s per AORUS 1080Ti at 180 watts (60%) and 51.5 Mh/s at 300 watts (100%). The default 25 intensity seems to be the fastest (100% GPU usage).
A single AMD radeon 480 does 14,5 m/s with the opencl miner. so with
2 1080ti cards in the rig and sp-mod #1 you mine as fast as 7 480 cards.
300 watt might sound alot, but 7 radeon 480 is pulling more.
but 120 watt for a 7Mhash increase might not be worth it.