I've got several Sapphire 7970 OC w/boost, and one of them seems to have a different bios. Most say they have version 015.025.000.099.000000 (113-2104XTHY-OB5), but one of them has 015.025.000.099.000000 (113-2104XTHY-OB6)... same major version, just the header is slightly different. Online, I...