Not 100% sure that the AIO is knackered either. I don't hear the pump whine, but that could be that I'm getting older.
If it wasn't cooling OK, wouldn't I see higher temps? Idle in BIOS is 57C for CPU (5900X).
In Windows, with global C-states off, mining XMR algo on all 24 threads, temps only hit 72C in HWMonitor, and no throttling, not like PrimeGrid's load.
We'll see if it crashes while mining on CPU; I've updates the ROG STRIX B450-F BIOS to 4702, ComboPI V2 1.2.0.6b. Supposed to fix some stability issues.
Edit: Still rebooted, BIOS 4702 didn't fix the problem.
