Raspberry Pi fan air direction and its effect on CPU temperature, what is better? push vs pull

In this video I'd like to test what fan air flow direction is better for cooling if Raspberry Pi in enclosed acrylic case (for more info about the case see this video: https://youtu.be/e5yMbFIsDSU ) The test is performed with "stress" utility which can utilize cpu on 100% over the whole time of the test. For this particular test I use 7 mm fan obtainable from Aliexpress (see the links below).

Measurement conditions:
Ambient temperature: 23.4 C (± 0,5 °C)
Relative humidity: 44% (± 3%)

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Where to buy:
7 mm fan: http://s.click.aliexpress.com/e/aIMFYfI
Acrylic case: http://s.click.aliexpress.com/e/_dWP1Mfo

Music:
https://soundcloud.com/djsatelit/crunky

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#plukas #raspberrypi #raspberrypitutorials

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