So I'm assuming running P95 heat test a VRM temp of 72C is pretty decent? That's with my case open, though. I'll have to retest it with it zipped up.
Typically they don't throttle until they get to north of 100C, like around 110-120.
Were they real low quality? ~60C seems super low.
The VRM on my MSI x570 gaming + was getting just over 90c as per HW monitor and yeah the heatsink on it was mighty toasty. I realize this board has a shit VRM and the 3900x I have it it is close to its limits. I added a fan near it blowing on the heatsink and this dropped its temps by around 7C so its fine as far as I am concerned. I personally am not worried about anything under 90c for 24/7 but ymmv and certainly i understand the points about measuring spots that Dan mentions so i have no idea how accurate the temps I am getting are I just know for a fact the heatsink on it was very hot.
Some of the lower end MSI boards have atrocious VRM designs. The X570-A Pro is one example of that. I have thermal images of the VRM that make those heat sinks look like a Forged in Fire episode.