If the 3060ti only consumes around 120-150w undervolted do you guys think it's safe to use this?
A Molex plug is specified to handle less than 150w passing through it, and a typical cable has 3-4 of these, with the plug closest to the psu end of the cable having the full load connected on the cable passing through it.
Theoretically possible if you connect a single molex plug each from two different cables (and have nothing ele connected to them) to the molex to pcie connector.
But, the molex to pcie connector like the one you linked above have poor construction and below gague wires and are very likely to melt/burn under a sustained load of over 80w.
Thank you, thats the kind of information I was looking for. I also see your point about the sustained load issue - but would you know how big of a risk i'd be taking if I just want to maximize the use of an old PSU and wait for it to burn/melt? I'd be fine for that to happen as i'd be near the rig and be able to monitor it's heat, i guess i'd like to know if a burned out adapter could break my GPU?