I get about 410-450 MH/s with 18 GTX 1060 6GB's
I run power limit 75%
MEm clock +550
They run at +- 65c
Now with the byzantium hard fork my earnings got trippled.
I now have an etimated earning of 1010$ a month at ethermine.
earnings aren't tripled. It's ~25% increase. With byzantium difficulty is dropped back to ~1600 from ~3000 while the mining rewards are 3 ETH/blk from 5 ETH/blk