> The Pi 3 can go passively cooled and maybe even without a heatsink at load, but the newer Pis can't.

The Raspberry Pi 4 can be used without a fan. They are packaged inside keyboards, but both the Raspberry Pi 400 and the Raspberry Pi 500 are passively cooled.

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nottorp 13 hours ago | parent [-]

I have a 4 with a huge ass passive heatsink on at home. It's my minecraft server when I feel like it.

The heatsink is uncomfortable to touch (it's not in a case). Pretty sure it would downclock if i removed it. So it works without a fan, but not without a heatsink (I bet the keyboards have a heatsink for the Pis built in.).

A 3 would have worked fine without any heatsink at all. At least at normal room temperature.

	▲	heresie-dabord 12 hours ago \| parent [-]
		> Pretty sure it would downclock if i removed it. So it works without a fan, but not without a heatsink The Raspberry Pi 4 will throttle performance at 80C (if I recall correctly) but it can work without a heatsink. I have a R.Pi 4 working without a passive cooler in an enclosure and it reports 55C-62C most of the time. > I bet the keyboards have a heatsink for the Pis built in You are right, both models use a heatsink. The PCB is also different, although the respective CPUs are standard Pi 4 or Pi 5. Incidentally, the CPU in the R.Pi 400 has a higher clock rate than the standard R.Pi 4, so it performs better.