Woah guys, i just installed on my 1080Ti rig the latest 390.65 nvidia drivers, and i tried the latest 1.4.1 excavator compiled in cuda9.1, you really did awesome this time guys.
Neoscrypt from 7MH to 8.4MH (6x1080Ti - 150W per card (TDP 60%) - OC +120/+200)
Keccak from 7GH to 7.5GH (6x1080Ti - 150W per card (TDP 60%) - OC +120/+200)
going to test out more algos, cards model
EDIT1 : no increase on good old 1070 and 1070Ti, but 1080Ti gain is huge.
Thanks!

Speedups on 1080Ti are quite good!
Regarding 1070 cards, there should be some increase as well, but definitely not as big as on 1080Ti.
Here are the results of some quick benchmark on 1070 (stock settings):
Excavator version: 1.4.1a_nvidia
Algorithm: lyra2rev2
GeForce GTX 1070: speed =
42.22 MH/s, 0.00 H/s, power usage = 168.27 W
Algorithm: keccak
GeForce GTX 1070: speed =
803.26 MH/s, 0.00 H/s, power usage = 179.34 W
Excavator version: 1.4.1a_nvidia (CUDA 9.1)
Algorithm: lyra2rev2
GeForce GTX 1070: speed =
42.87 MH/s, 0.00 H/s, power usage = 170.12 W
Algorithm: keccak
GeForce GTX 1070: speed =
854.04 MH/s, 0.00 H/s, power usage = 179.22 W
Remark: Neoscrypt performs worse with CUDA 9.1 on 1070 cards - we already have a fix for it and hopefully a new version will be pushed out this week.