@vaulter
You know when you use very low TDP you can push OC to +180-220 on core with right TDP miner that can result undervolt but its hard to find stable settings, because on low GPU usage GPU will boost as mad...
Same results can be done with afterburner graph ctrl+f and limiting freq/voltage to <1v for 1900-2000Mhz but its a bit hard to do with more then one card, stupid afterburner must to it for each card one by one, and looks like the graph have some issues, the graph must not be linear to the end as last 3-4 settings must be higher then the rest of graph
For best undervolt we need BETTER OC tool for NV that can do manual volt/freq adjustment!