Thanks to community member if you will answer of my above questions ?
Here is a wild and crazy idea.
Why don't you try it out, and report back on your results.
What say you ?
EDIT: And just so I don't look like a hypocrite.
Single 1080ti. +10% memory overclock. Fans set to high.
Stats at f2pool since I started mining there a couple days ago.
2 1080 Ti and 4 1070 with 125 on the core, 300 on memory (except one bad 1070) and 200W/120W for 1080 Ti/1070, in case it helps anyone.