NicoVanDerDussen
Posts: 74
Joined: Sat Aug 24, 2013 2:41 pm

CPU overtemperature protection

Wed Nov 05, 2014 10:04 am

Hi,

Is there any automatic protection should the CPU temperature go to high?

At the moment I'm reading

/sys/class/thermal/thermal_zone0/temp

and getting temperatures of 64°C.

What is the maximum safe temperature for the Model B+?

My application has to run outside in desert conditions.

Thanks
Nico
Setting up your Raspberry Pi to work with a 3G dongle http://nvdd.info/11gKrsZ

User avatar
rpdom
Posts: 15868
Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: CPU overtemperature protection

Wed Nov 05, 2014 10:47 am

There is protection to stop the CPU going over 85°C.

The CPU will throttle back to a lower speed (assuming the overrides haven't been set) and I believe the chip will shut down if it stays over that limit.

85 degrees is a figure that has been deemed safe to run the CPU/GPU at without reducing its life span to any great extent.

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