Thank you notbatman, I was able to take my Sapphire NitroPlus RX570 8GB from 24.3MH/s to 26.8MH/s on claymore mining Eth. Should I be able to get more out of these?

I have bought another 2x Sapphire NitroPlus RX570 8GB marked OC that won't work with the BIOS I provided originally could you take a look at this one please:

https://www.dropbox.com/s/dehblg01rx9i0n9/Sapphire%20NitroPlus%20RX570%208GB%20OC%20-%20Micron%20Original%20Bios.rom?dl=0

Thanks

Batman thank you for helping others in this thread.

Would you be able to do 2 Bios Mods for me please:

RX570 Sapphire Nitro+ 8GB (Micron) - Original Bios https://www.dropbox.com/s/k6e8ydktvp35riy/Sapphire%20Nitro%2B%20RX570%208GB%20-%20Micron%20Original%20Bios.rom?dl=0
RX570 Sapphire Nitro+ 8GB (Hynix) - Original Bios https://www.dropbox.com/s/mng5x3i36d7mmwf/Sapphire%20Nitro%2B%20RX570%208GB%20-%20Hynix%20Original%20Bios.rom?dl=0

Please note that I am only interested in max performance (namely ETH hash). There is no requirement to optimize power at the expense of hash rate.

Big thank you in advance.