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Good for Pi 4?
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#1 (permalink)      7/17/2019 6:36:00 PM US Central   quote/reply + tips
SmallerTheBetter
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Good for Pi 4?
This should fit with a 10mm fan on top..Has anyone tried it? Obviously you need to cut off the holes
#2 (permalink)      7/18/2019 10:41:04 AM US Central   quote/reply + tips
essellar
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At 6mm (1/4") and a small number of fat fins/slots, it would be slightly better than nothing... but only slightly. You'd want more surface area, whether that's a much larger flat heatsink (with some sort of thermal standoff) or something with much taller fins. And you'd also want more than just a 10mm fan with the Pi 4 - there's more than just the SOC can that gets hot on the board now (unlike on previous RPi versions), and you'd want enough air spill to help cool components around the processor, unless you're keeping the card vertical and have good passive airflow.

That assumes you're going to be using the Pi 4 the way most people who buy a Pi do (which is a very different way from what it's actually designed for - light programming/control tasks and experiments for kids). It's become quite a capable little computer with version 4, but it needs good cooling if you're going to stress it at all.