Are laptop coolers really necessary

How well does a laptop cooler work? We ordered one to find out

We have an hour for the test Witcher 3 run with the energy saving plan "maximum performance", first without the cooler and then after 30 minutes of waiting again with the cooler. The results of our measurements were as follows:

 Average CPU temperature (C) Average GPU temperature (C) Hotspot on the surface (C)Fan volume (dB (A)) 
Witcher 3 without laptop cooler 9276 44 53.9 
Witcher 3 with laptop cooler80 70 40 59.2 

As you can see, the CPU and GPU temperatures dropped by 12 and 6 ° C and the keyboard surface temperature was also slightly lower in the second run. In view of the fact that the laptop does not have to be dismantled or the guarantee has to be sacrificed by replacing the thermal paste, the results are not bad.

The disadvantage is the clear increase in volume, from 53.9 dB (A) to almost 60 dB (A). On the positive side, however, it should be noted that the subjective increase in volume was not quite as pronounced as the figures suggest. Because the fans are much larger than normal laptop fans, the frequency of the resulting noise was considerably lower. Our microphone registered a strong increase in the spectrum of 150 Hz through the laptop cooler, whereas the fans of the MSI laptop themselves sounded in the range of 3 kHz.

In a nutshell, it can be said that a laptop cooler can be a worthwhile investment if you intend to play with the laptop or expose it to high processing loads for several hours. The results will of course be different from laptop to laptop, especially for devices with fewer and smaller fan grilles on the underside. The G14 and G15, for example, are notorious for their tiny fan grilles on the underside of the case.