Interesting, the ASRock motherboard mesures tCTL instead of tDIE.  The difference being that tCTL is a 20 degree offset that's used for the "x" ryzen CPUs, so instead of ramping up at 60c, it decided to ramp up at 40c.

I decided to meet the motherboard half way.

At 45c, the fans jump up by 15%, then at 50c, it starts ramping up.  It levels out at 65c, then hits 100% at 75c.