I have an Air. Maybe active cooling prevents it from getting too hot. With the Air, the metal body is kind of the heatsink.

I can configure my Snapdragon plastic laptop such that the fan doesn't turn on, so the body being metal isn't a requirement for not turning on the fan...

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p_ing 5 hours ago | parent | next [-]

If the body was a heatsink, it would be extremely hot to the touch.

https://hothardware.com/news/make-your-m1-macbook-air-perfor...

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nandomrumber 5 hours ago | parent [-]

From your link:

Essentially the bottom cover of the MacBook Air becomes one large heatsink

Anyway, the author claims:

you are the type that likes to work with the MacBook Air on your lap it will be quite a bit more toasty than before.

Does toasty mean extremely hot?

The Apple M4 CPU is, if I recall correctly, capable of converting 20 watts of electrical energy in to heat, at full throttle.

Is that likely to bring the back plate or a MBA above 45 degrees?

You’re probably right, with sustained workloads it could.

Everything’s a trade off.

	▲	necovek 3 hours ago \| parent [-]
		In a Notebookcheck test, they got the bottom plate up to 43C, and top plate near the screen up to 45C: https://www.notebookcheck.net/The-passively-cooled-M4-SoC-ma...

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caycep 3 hours ago | parent | prev [-]

hence the Neo and the iPhone chip!