Automatic frequency reduction of notebooks

Q: My notebook computer recently played 3D game when the CPU always inexplicably automatically reduce the frequency, causing the system speed becomes unusually slow, what is the reason?

A: This phenomenon should be the hardware of an overheating protection function. As we all know, notebook computers in order to reduce the volume, in the internal space, thermal performance will not be inferior to desktops. In a large number of operations such as running a large 3D game, because the cooling system is not enough to the CPU part of the heat emitted out in time, only to take frequency reduction to protect the overheated CPU. When this happens, it means your laptop needs to clean up the interior dust.