Soldato
Can not believe after all this time this bug has not been fixed with new Firmware or Drivers.
1st card runs at 1.187v and the 2nd card runs at 1.212v.
To get them both run at 1.212v i lowered the overclock of the 1st card (card that runs at a lower voltage) by 1MHz.
Now they run the same clock and same voltage.