[ftaghn]

Most are DIY, anything that is low wattage can be turned fanless if you buy some parts and build it yourself. But OP was daft with his answer. As someone who doesn't like the Apple ecosystem and only uses PC, I can only admit defeat when it comes to power efficiency. There is no way you could make a true fanless system run as well as Apple's efficient SOCs. PC parts that are as powerful generate a lot more heat and even with the best fanless cases and radiators there is only so much you can do to dissipate heat.

[fweimer]

Is it really that bad?

When semi-idle (just typing in a browser), turbostat on a i9-10900T system shows values that fluctuate around these values:

        PkgWatt CorWatt GFXWatt RAMWatt
        4.86 3.89 0.15 1.57
        2.21 1.40 0.02 1.41

Mostly it's around the second line with the lower values. Of course, when under load, PkgWatt can go up to close to 100W (depending on the system tuning), but if the cooling solution can handle that for a sufficiently long time, is this really a problem? After all, this CPU, while somewhat dated, is not actually slow, especially for multi-threaded workloads.