When you go into msi afterburner, does it identify your card by name usually saying something like radeon 7870. If it says 7800 series, then it is still not properly identifying your card. The more like issue is that xfx blocked unlocking core voltage. Call them just to make sure. As I said, I had previously purchased a visiontek card with a "llifetime" warranty and in turn they blocked unlocking voltage because they didn't want to be receiving cards that people had messed up due to adjusting the voltage improperly. You could always flash a completely unlocked bios that is easily found on google, but this will most likely block you from using then warranty if you had to in the future.