Hello guys, in this tutorial, I am going to compare heating (Thermal Testing) results of raspberry pi with dual fan heat sink aluminium armor and without heat sink & fan. So lets get started.

  1. Raspberry pi 4,
  2. microSD card,
  3. Power adapter.
  4. Dual Fan Heat Sink Aluminium Armor Case.

    I did two experiment, one without heat sink and fan. Second with dual fan heat sink aluminium armor.

    Watch Command:

    I did both the experimentation then i realized that i could use “watch” command for monitoring the temperature. But i am showing how you can use watch command.

    Just type watch before the command. That said. It will run that command every two second and display output in console like this. Every two second it will update current temperature of GPU.

    watch vcgencmd measure_temp
    Watch command to monitor temperature

    “Watch” command to monitor temperature

    Raspberry Pi Temperature Command:
    1) Raspberry Pi GPU temperature
    vcgencmd measure_temp
    2) Raspberry Pi ARM CPU temperature
    cat /sys/class/thermal/thermal_zone0/temp

    OR

    cpu=$(</sys/class/thermal/thermal_zone0/temp)
    echo "$((cpu/1000)) c"

    divide output by 1000 to get ARM CPU temperature.

    Experiment 1: Without Heatsink and Fan.

    I am going to run it for one hour. In first half an hour i will be playing youtube videos to see how much it will increase the temperature. Next half will be idle. We will see how it drop the temperature.

    Now We can see maximum temperature was 82 *C and minimum temperature was 65 *C. My ambient was temperature 30 *C.

    without heat sink first half an hour

    without heat sink first half an hour

    without heat sink next half an hour

    without heat sink next half an hour

    Experiment 2: With Dual Fan and Heatsink.

    Similarly we will run youtube video on raspberry pi for half an hour and watch how much temperature is increased. Next half an hour will be idle. We can see clearly difference between the temperatures with dual fan and heat sink and without heat sink & fan. We can see maximum temperature was 61 *C and minimum temperature was 45 *C.

    with heat sink & fan first half an hour

    with heat sink & fan first half an hour

    with heat sink & fan next half an hour

    with heat sink & fan next half an hour

    If we consider my room temperature which is 30 *C. This dual fan heatsink armor dissipate heat nicely.

    Dual Fan Heat Sink Armor Case

    Buy on Amzon Dual Fan Heat Sink Aluminium Armor Case.

    Till then keep learning keep making.