Hi!
I have PowerColor HD7870 GHz Edition 2GB GDDR5 (V2).
I've extracted through GPU-Z and checked it's BIOS through XVI32. Found that it has UEFI support inside.
Note that this card is Pitcairn architecture with 1000/1200 freq formula!
Don't try to flash this to 7870 based on Thaiti LE...