I was building myself a home Pi Hole using a Pi4 kit which came with a standard plastic Pi Case. I put a little heat sink on the CPU, but found in use that the Pi Hole was reporting that the CPU temp was about 55 Degrees C, I thought this was a little too warm. I did not want the noise of a cooling fan so I purchased this FLIRC case and swapped cases and the unit now reports to be running at 42 Degrees C. The FLIRC case does passive cooling quite well and I am pleased.
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