Bios mod rx570 8gb microm

Hello. i have 24 cards

Radeon RX 570 8192 MB · Sapphire

Micron MT51J256M32 · 113-5E353BU-O6G
I read that you can get 34mhs out of them at 65 in. Maybe someone has a bios to give such results?

I can Pay;)