Should I flash Sapphire HD4870X2 's bios into ATi's HD 4870X2? I have flashed with some modification,but it's seem unstabe.Because I did not notice that it have two version of Master and Slave. Here ,it's seem have two version of this card.One with "Hynix" ,the other without "Hynix" Which one shuold I choose to deal with my card! Thanks 2 TB!!