Hello. I have a xfx hd6970. I tested this card with 1.15V [MSI-Afterburner] successful @ 950/1450. So I thought to change the gpu-voltage @ bios with rbe 1.27 (from 1.175 to 1.15) After i saved the modified bios i tried to flash my card - without success - i got the message that the rom can not be deleted. Finally I found this command: atiwinflash -unlockrom 0 After that I could finally flash this card with the mod bios. After the reboot i tested it out... Now gpu-z still shows 1.175V, but msi afterburner shows 1.15V ?! What is correct?