well you need to either edit your bios. or download one.
then you need a older beta version of msi afterburner.
then you need to force that to allow 1.3v.
then you need to download an app that dissables llc and allows voltage change.
And personally id only do it if i was well water cooled. "even then i am watercooled and chose to just edit my bios to remove tdp, and not up the voltage."