No have not tried, not sure if possible or not, I would assume it should be. Vram when I checked while mining Ethereum, something that really stresses the Ampere cards, it was rather cool, like less than 70c if I remember right. As for VRMs no clue, never checked while under load with HWinfo.Have you tried adjusting the voltage for the VRAM, in isolation, if that's still possible on the Radeon 6000 series? Also, how are the temperatures of your VRAM and your VRMs?