Havent done Zcash in a while but back then I was doing 770-780 and "IF" i'm lucky 790-800 but very rare this high.

+60 Core
+800 Mem

I also have the power at 115% because free electricity lol.
Fans at 95% because thats what they are designed to be at.

temps were around 60-68C

Several EVGA 1080ti FTW3

Mining Skein at Hashrefinery and Ahashpool seems the best thing right now for these cards.