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Will the Intel NUC auto-shutdown if it is too hot



I have a BXNUC10i7FNH1.

Will this Intel NUC auto-shutdown if it is too hot?



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Super User Retired Employee

The processor has two protection mechanisms...

First, If the processor's/system's cooling solution fails to do (or is prevented from doing) its job and temperatures rise to the processor's Tjmax (Maximum Junction Temperature; typically 100c, but can vary from one individual processor to another), the processor will protect itself by throttling its performance. In this case, you will see the processor's Core clock being reduced to some specific low level.

Note: There is also a capability for the motherboard - and specifically its voltage regulation circuitry - to signal the processor that it is overheating. This is done via a signal called PROCHOT. When PROCHOT is asserted, the processor will also throttle its performance to help lower these temperatures. When temperatures exceed the processor's Tjmax, the processor itself asserts the PROCHOT signal. This signal is sometimes monitored by the cooling solution and, when the signal is asserted by either the processor or the motherboard, all cooling devices (fans, blowers, pumps, etc.) will be taken to their maximum speed.

Second, the processor has a capability, called THERMTRIP, that is used to protect the processor from silicon meltdown in runaway thermal situations. In this case, if the assertion of throttling does not stop the rise of processor temperature, once the temperature reaches a certain threshold (some processor-specific - and never published (so don't ask) - number of degrees above the Tjmax temperature), THERMTRIP is asserted and the system is immediately powered off.

Note: The Digital Thermal Sensors (DTS) in the processor cannot represent temperatures above Tjmax. Once temperatures rise above Tjmax, the sensors will continue to report the Tjmax temperature. You thus cannot tell how close to the THERMTRIP threshold you actually are; you simply know that you are at or above the Tjmax temperature.

Bottom line, yes, there is an auto-shutdown mechanism,