Please check these
I updated my rig of two rx480 xfx to mine eth using hiveos
Both into x16 slots
 
Z170 A pro Motherboard
1card 28mh
2card 7mh
Cpu intel 7500

Hash rates are up nicely but i wonder if its possible to make them run both
How do i configure lanes property.
I can't make second Pci to run at good rate, swapped the cards which proved its not gpu issue