Just to say, i think i heard someone say using the Gigabyte BIOS on a Sapphire Vapor-x Ghz does not boot. I may be wrong though, just a warning as that guide states to use that BIOS for a sapphire vapor-x - I can 100% confirm the BIOS i said, which is a sapphire BIOS will work for the Vapor-x ghz.

Good to know that BIOS works for an XFX though, i had people tell me they got it working for XFX cards but forgot to ask which BIOS they used.