Now with the new BIOS the rig is working well. 14.3 - 14.5 Mh/s / card - 60-65°C - FAN: 80-90%
24H test completed!
Thanks the good advise again
Nice results for a free BIOS mod. We see more and more bios mods and/or private miner versions for sale.
Maybe they help but the prices are getting higher and higher.
I know the prices getting higher like the prices of the cards.
I think I will paid for mods if I will get RX 570 or 580 or any similar rig

So thanks for everybody who helped to me.