Are you sure that it's showing the GPU's voltage in HWmonitor? That may be your CPU voltage. Since this card advertises voltage tweaking (all reference 4890s should be able to do it), I'd assume the proprietary software would work fine.
Originally Posted by tehmaggot
Gotcha. It may only be applied when in-game, have you tried opening Rivatuner, enabling the VT1103 plugin, and allowing it to monitor in the background? The VT1103 plugin differs from the popular VT1156, in that it can only monitor and not change voltages.
I'd try enabling the VT1103 plugin in Rivatuner, set it to monitor in the background, and open up a game after your voltage changes in SmartDoctor have been applied.
I have my doubts that this will work, since HWMonitor is displaying "Max" as 1.3, but I suppose it's worth a shot.