Raspberry developers claim that most users of the Raspberry Pi 3 Model will never see the temperature at 100C, as shown by recent tests.
Iben upton at workOn Geektimes recently information was published that the
Raspberry Pi 3 thermal survey
showed heating up to 101.3ºC (without using a GPU). Based on the data obtained, the author of this test concluded that the Raspberry Pi 3 is not at all as good as is commonly believed. The web is still actively discussing this situation.
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One of the mini-PC developers Iben Upton also joined the discussion. He argues that during normal work with the Raspberry Pi 3 there will be no overheating. Upton says that the test used in thermo photography is synthetic, in fact, the “raspberry” will not behave in this way during normal work. “In normal work, I would say that never,” Iben Upton commented on the situation.
In the test, the processor was loaded almost 100% by running a test for calculating prime numbers. In normal operation of the mini PC, such loads are
simply impossible , and the temperature will never rise to the limit recorded during the specified test. As for the temperature increase in the dough, this phenomenon is due to the fact that the Raspberry Pi 3 is installed 10 times more efficient processor than the Raspberry Pi 1.
With a low load, the mini PC processor runs at 600 MHz. During periods of heavy load on the processor, the frequency increases to 1.2 GHz. If you force the processor to work with such a load for a long time, the system begins to heat up. But when the temperature reaches 80 ° C, the Pi 3 processor will begin to “slow down”, the frequency of operation will decrease, and heat will begin to dissipate. If the temperature rises to 85 ° C, the processor will reduce the operating frequency to 600 MHz.
It is worth recalling that the Raspberry Pi 3 works with a 64-bit processor with the ARM Cortex A53 architecture, whereas the Pi 2 has a 32-bit processor. The basis of the Pi 2 is an ARM Cortex A7 processor. The new processor is also four-core, like the second “raspberry”, but it is faster. As already mentioned, its peak frequency is 1.2 GHz, which is 300 MHz more than the Pi 2.