If a MacBook Pro runs hot or shows high kernel CPU, try charging it on the right

Re:If a MacBook Pro runs hot or shows high kernel CPU, try c... by the_pwner224 on Thursday April 23, 2020 @04:16PM (#22960708)

This was also true for me on a 2012 MBP (on HDMI and DisplayPort iirc).

My XPS 15 had a similar issue where turning on the GPU made it heat up and become loud - actually the discrete GPU offered no performance increase because the heat made everything throttle....... sad! At least I could use an external monitor with that one though.

It's just a limitation of the laptop form factor. My desktop has a 45 watt processor, same as the i7s, and it has a huge block of metal and a 120mm fan to keep it cool quietly (but still audible under load). There's no way to fit a 45w CPU and 45w GPU into a laptop and make it work.

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Re:If a MacBook Pro runs hot or shows high kernel CPU, try c... by fwip on Thursday April 23, 2020 @06:39PM (#22962386)

I'm okay with the fans spinning up loud when I'm doing something intense! I expect that transcoding video or `make -j12` will put out a lot of heat.

I'm frustrated because the fans often spin up loud when GPU usage and CPU usage are both below 10% - when I'm literally just reading my email.

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