2nd May, 2016, 04:34 AM
I've been doing some testing with the RPi3 and Xbian with temperature stress related events.
Under normal conditions, it's fine, but under stupid conditions, it occurs very quickly.
Static the RPi3 runs at around 55 degree, whereas the RPi A & B are 53 degrees. So nothing out of the ordinary.
Stressing the RPi3 for just 60 seconds increases the heat to 81 degrees.
Stressing the RPi3 for just 90 seconds increases the heat to 83 degrees, where the governor kicks in, the CPU freq is reduced and you get a yellow box appear on the screen (just like the rainbow box for low power).
Stressing the RPi3 for just 120 seconds increases the heat to 84 degrees but stays stable. A movie still plays whilst this is going on.
Xbian - still plays when 100% of the CPU is being used.
Adding a fan drops the temperature by about 10 degrees.
Adding a CPU heatsink should reduce it by 5 more degrees. I'm waiting for the sinks to confirm, but I don't expect any variation to other tests on other RPi.
However, it is not hot enough to fry bacon, an egg, nor a hamburger - just in case you were attempting to try!
(Although I'd be interested in any stupid attempts) - normal litigation exceptions apply. (Mainly if you try it,. then you're a dumb ass)
Under normal conditions, it's fine, but under stupid conditions, it occurs very quickly.
Static the RPi3 runs at around 55 degree, whereas the RPi A & B are 53 degrees. So nothing out of the ordinary.
Stressing the RPi3 for just 60 seconds increases the heat to 81 degrees.
Stressing the RPi3 for just 90 seconds increases the heat to 83 degrees, where the governor kicks in, the CPU freq is reduced and you get a yellow box appear on the screen (just like the rainbow box for low power).
Stressing the RPi3 for just 120 seconds increases the heat to 84 degrees but stays stable. A movie still plays whilst this is going on.
Xbian - still plays when 100% of the CPU is being used.
Adding a fan drops the temperature by about 10 degrees.
Adding a CPU heatsink should reduce it by 5 more degrees. I'm waiting for the sinks to confirm, but I don't expect any variation to other tests on other RPi.
However, it is not hot enough to fry bacon, an egg, nor a hamburger - just in case you were attempting to try!
(Although I'd be interested in any stupid attempts) - normal litigation exceptions apply. (Mainly if you try it,. then you're a dumb ass)