Added the jsaux backplate and stuck a 40mm heat sink on the plate to help with passive cooling, not sure how much it helps but the fan is quieter so I’m happy with it!
The heat sink stays cooler than just the case plate since the fins dissipate better and the fin area has less contact surface when you do, can leave my fingers on it for 10-15 seconds vs the plate at 3-5 seconds, but with that said I have to purposefully reach for it, my hand never makes contact with it on accident
Formal testing no, I could tell the case plate would get hot and my understanding is when the thermal mass stabilizes at a temp the fan would run as normal, so this adds a bit more mass but in a way that’s easier for the heat to passively dissipate