I just got EVGA GTX 1070 FTW, and this is my first attempt to overclock this card.
My card have a micron chip, who reported not as good as samsung chip.
Using MSI Afterburner, I set voltage to 100% and power to 112% with 80% fan.
Set Core clock : +100MHz , Memory clock : +400MHz

Passed 3DMark FireStrike & Timespy without any trouble.

Micron chip isn't that bad.
I love my FTW card.