First of all, you have to understand why the fan turns: it is for the high-temperature CPU and high-temperature graphics card heat treatment to prevent internal damage due to high load operation.
In fact, not only the millet game fan is loud, but any game as long as it is playing games, the fan sound is big.
In fact, the notebook radiator and most air-cooled desktop box sound is generally no two (here is not to say that the particularly good silent fan), the reason why you think the notebook radiator fan is loud is because the notebook radiator fan is close to you.