I use the Artic Cooling Freezer 13Pro on the 8120. It's on a linux box (@100% on all cores) but I think CPU temperatures are being reported incorectly as they peak at around 40C at stock speeds. You need a large case for it though

I use my mainboard utillity for core temp. AMDs utillity is not callibrated correctly on my system.

The 8150 auto throttles Ghz at 75C to avoid blue screen/crash.  But if your not monitoring, it will be unnoticed.

The problem I've experienced is that it takes over 10 mins to reach that state, with no aparent indication or stabillity issues.

The only way to spot it is by monitoring CPU parameters at full load and look for auto throttle.