Got an EK titan block on my Asus 1080 Ti FE and its working very well.
Stock air cooled 120% power would boost to 1911 max but run up to 84 degrees and throttle back to around 1838, kinda expected and was also running to full 120%
Stock water cooled 120% power boosts to 1911 and stays there
+104 gives 2012
+137 gives 2038 max power only 110 temp 25c with odd spike to 26c
+154 gives 2063 max power only 114, temp same
+165 gives 2076 max power only 117, temp same
+182 gives 2088 max power and temp hasn't spiked any higher
+193 gives 2101 max power and temp hasn't spiked any higher
+204 gives 2114 did driver crash here, but just adjust core clock is starting to bin max volts at 1.043, adding +25 on voltage got it back to 1.050 and it passed benchmark. power and temp still hasn't spiked any higher.
+216 gives 2126 did crash again due to voltage binning left it there for my first play under water
Admittedly I was only running in game benchmark from "The Division" and it is pretty short, but its pretty graphic intensive game and it was running full gpu usage.
Will play around with AB graph tomorrow to get volt bins a bit better. Before some asks, its on chilled water set at 20c which is why the GPU temps are so low. Also has a great effect on power efficiency being colder which is why power usage drops so much. Would still need to use a better bios if I wanted to go for max volts though I think.