Does the 1060 pull off its full hashrate at 50% TDP too? If it does that is killer efficiency for ETH. Problem with getting into GPU purchasing for ETH specifically now is that it is going POS soon. It should do nicely on ZEC and PASC
It depends on the brand and model as each has slightly different core and memory stock clocks. With EVGA 1060 SC 6gb they can go down to 72 watts each before they start losing hashrate: