is the wattage as reported by a program like hwinfo/monitor from the cpu-z team showing roughly the same wattage?
temps are subject to all kinds of sensor nonsense on the ryzen and am4 platform, but wattage is a simple math problem that takes voltage, current, and frequency and multiplies them together. No magic skew factor. Though, you do have to trust the voltage and current measurements. I trust them a lot more than i trust the temp readings.
Assuming your cooler and ambient temp is the same, if you see the same wattage, then you should see the same temp. If you see a wildly different temp but the same wattage, then you know the temp is way inaccurate (though you still dont know which temp is inaccurate). At that point, if you haven't sworn off the platform for being stupid, I would get a laser temp gun (dont you have one already? - they're a necessity) and see which temp is closer to what the gun says. The gun will always show something fairly low compared to on-die, so after the system has had time to equalize at load, i'd fire at the block and the closest temp without going over is the winner (price is right rules i guess).
just an idea to troubleshoot.
