Checking a couple of Gigabyte RX580's which I have kept as a backup for the mining rig should one of the other cards fail and they seem to have BIOS version that is not recognised (F80, while the BIOS versions at Gigabyte's web site for Hynix memory cards are F10 and F11). The cards were bought new. No sure if this is a reason to RMA them. Any ideas?