2x EVGA GTX 1060 3GB (+800mhz memory 80%power) - 23-24mh/sec
2x Asus Phoenix (single fan) GTX 1060 3GB (+350 mhz memory) - 18-19mh/sec

Whole rig 83-85mh/sec

Using latest Ethminer CUDA version for GTX 1060 (+10% more mh)