I have had lifetimes of a few minutes just to about 30 mins with high clocks. But then again I am also pushing the MCU to a few times the maximum clock. Then again if a single MCU is 0.4$, I don't really care them dying. I think the advertised speed ...

I have been able to push the G030F6P6TR to 240 MHz. Stable on 3.3V is somewhere around 216-220Mhz. Cooling never seems to be an issue, even on 240MHz. I have also found a few interesting facts. Setting  RCC_OscInitStruct.HSICalibrationValue = 0U; ena...