NONE of the Vega 56 BIOS from Tech Power Up with the same ID strings will operate on the Sapphire Vega 64 reference cards I have . They will install but the miner application will stall and fail to run. This is the case with LOL or NB, same result. Revert to the original 64 BIOS and they come up and run. I have about 6 different BIOS files, and one that was given by a real supposed PRO. None of them will run at all, so this is yet another case of people claiming results which do not apply across the board as is the case with Polaris cards as well.
If anyone has a 56 BIOS that will actually install and run these cards at the 51-54 MH, I would be very grateful to try it, btu something is off with these cards for whatever reason. They were also factory refurbished, and the stock BIOS downloaded off them was odd in that it seems to be a Powercolor BIOS on sapphire cards. Very strange.