it seems that the best 1080ti is the asus strix, has best cooling and it's not so loud, the next one is EVGA extreme
Just for reference, I have a 4U 3X EVGA 1080 TI FE rig, OCd and tuned, pumping over 2200 sols @ 885 watts on the kill a watt meter.
Stable and hashing away for a week now. Evan dumped it on ZEN for a few days and snagged some coin.
My temps arent ideal... my garage is NOT a decent place to host in the summer... but I have a COLO rack opening in a few days and that will stabilize my temps.
885 with overhead isn't too bad IMO... its on an i7 6700K with a water cooler and extra drive space so it will also be acting as a node... so there are a few extra watts being pulled that could be trimmed by low end CPU, cooler and an SSD.
Otherwise, the above rig pulls in at least $25 a day at current rates and I never cash out at calced rates. On ZEN it made $60 a day easy till yesterday.
What is ZEN? Sorry just got back into mining so dont know all the terms yet. So your setup you are ming Zec(Zcash)? Are you using EWBF? That matches up with my mining stats. I was pulling around 720 Sol on a single 1080ti Auros @ around 300 Watt total system. You should try ccmineralexis78 Skein only. I was mining Zec and found switching over raised my profits by 30% or more for now. I want to get some more cards and get a setup like yours going.
zen is a copy paste of zcash, another equihash clone with good profitability, it was good because you would get 1:1 with zclassic swap, back to a certain number of block mined