[lewisjoe]

This is the reason I have a couple of monitors lying uselessly on my table.

Everytime I connect an external monitor, it makes the GPU go crazy and overheats the Macbook enough to summon this kernel_task demon.

Couldn't comprehend why one of the best laptops on the planet cannot handle one external monitor.

[Tagbert]

When you attach an external monitor, that switches from using the Intel integrated GPU to the AMD discrete GPU which uses a lot more power.