Just to share my v8 Vega hashrates
9 Vega Rig - 1950 W out of the wall power draw
Too much power draw. That is about 210W per card (?) it should be around 180w for 1950-1980H/s
I doubt you can actually reach that at the wall with v8. Unless you have ice cold airflow and your GPU fans are hardly spinning... or you have won the silicon lottery.