Sferalabs Iono Pi IPBB20R User Manual page 29

The effectiveness of the Strato Pi Fan depends on several factors, including the external
environment conditions, CPU/GPU load, and other electrical loads.
In general terms, the fan will significantly increase the airflow inside the enclosure, and
improve heat transfer away from the CPU and the other nearby components on the
Raspberry Pi board.
The CPU will run cooler than without Strato Pi Fan, and it will take longer and higher loads
to reach its throttling limits.
Under ideal conditions, Strato Pi Fan may reduce both the CPU temperature and the
average air temperature inside the enclosure by up to 15 °C.
Refer to the SPBF10X Strato Pi Fan User Guide for additional information.
35C AMBIENT TEMPERATURE, LOW CPU LOAD
28 Iono Pi User Guide