Volt testing

Hi, my ASUS RTX 3070 shows 0 Voltage used in: GPU Tweak III MSI Afterburner I wanted to undervolt but don't seem to be able to without that reading - how can I debug it? Screenshot of both programs with highlighted (yellow) questionable spots: View: https://imgur.com/a/LP10Itg

Hey guys :) This is my first post here - not sure how everything works here but lets see. So I've built a new rig with a ryzen 9 3900x and a corsair H100x - and so far, as I've been testing with ryzen master, i came stable up to 4.2 GHz and 1.30 V. Now, this CPU stockwise has around 1.375 or...