It is single mode.
Dual mode needs more voltage to be stable and consumes 280-300watt. it is 43eth+220lbc
It is with blockchain drivers.
With 17.8.2 I was getting 41+200 at 240-260 watt
It was with win 7. With win10 and 17.8.2 I was getting only 38+200 (((

Need some time for further tuning ... but only when my air Vega will arrive.