I have rx 480 rx 4gb and il have modified bios for à 16 gb,all work fine and overclocked with the Last base bios,i mine à record all time comparé à vendor bios on Web,you can easy do this with a rx 580 because at first time the modder usé à rx 580 bios,i have using what ever bios,Just search the same number it Will fit on your card, now i mine high with unminer unmineable à good 24.22MH easy on Wi-Fi,and m'y Wi-Fi deconnect all time due modem security,i do all video,game,all,i have in more add virtual ram 1024x16×1.5 and 1024×16×3 all work fine with i5 6500 in all stock G11CD asus rog