I tried to change my HD 7970 voltage, the default is 1113 and I want to change it to reach a higher overclock. But when I adjust the slider on MSI Afterburner, and hwne I click Apply, it always revert back to 1113. I have enabled unofficial overclocking, disabled ULPS. This is also same with trixx. Is there any way to change my voltage ? My card is Club3d HD 7970 royalQueen