Can you make test with I7-8700K and 1070@PCIEx16?
I7-8700K. 1070@PCIEx16 + 1060@PCIEx4, OC: GPU +150 MEMORY +1200
0-549.6 1-432.8 Total: 982.4 H/s 2018/05/31 12:50:50 1 - Yay, solution found!
1070 is only 10% faster than 1060 under the same conditions
I7-8700K. 1060@PCIEx16 + 1060@PCIEx4:
0-509.1 1-412.5 Total: 921.6 H/s 2018/05/30 11:36:13 0 - Yay, solution found!