My 7GPU RX570 rig with flashed bios has 30.6MH per card with Claymore 11 under WIN10
30.6 Mh/s is impressive result for RX 570. Can you please tell me your GPU/Mem clock and what is the GPU temperature?
Actually I do not know exactly what the clock parameters are lol
I just flashed my cards with this bios
https://anorak.tech/t/sapphire-rx-570-nitro-oc-4gb-elpida/17038/10Temperatures are excelent. Even while my rig is very compact so it fits in standard 19" rack.
Rig placed in room temperature around 22degrees C cards are between 63-73, depends on if I leave doors open to the room.
Rig placed in server room with ac, 54-64 degrees C