if it can help you:
the GPU2 is a GTX 1060 3GB its getting 4.13 Sols/W, of course not every 1060 3GB can do it/handle it, I was lucky on this one.
the below Voltage/Frequency curve editor is accessible via CTRL+F. play with it, try to understand it. it can even out the power usage.
here we go if a old post of me: Mining with 1060 3gb cards - #9 by Uche32