Sapphire Rx 480 Nitro 8gb Bios Switch

Hey guys i bought a sapphire rx 480 nitro and when installing it i noticed that it has a vbios swtich i tried googling what it is but not clear answer so far. The 8gb card has five gpu power phases while the 4gb one has six. Atombiosbk amd ver015 050 000 000 000000 347x06su o5y ccc overdrive limits gpu clock.

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