Which mode of operation of the fans allows you to extend their service life: constant or intermittent?

Question

Cooling systems

I changed the fans in the laptop and would like to extend their life as much as possible. There are 2 possible options: the fans only spin when the GPU temperature is > 60 degrees and stop when it drops to 55 degrees, or the fans always spin when the GPU is engaged. In the first case, during alt-tabs from games, the fan stops, the GPU heats up very little, in the second case, the fan does not turn off during alt-tabs, but slows down. The bottom line is that in the first version, the fan turns on and off very often. Does it harm him?
ps It's clear that GPU cooling is a priority goal, and I set it up so that when it reaches 65 degrees, the fan goes to maximum, so this is already taken into account.

Answer 1

1. The fan can not stop at all, slow down the rotation to a silent minimum.
2. The fan is a consumable, a good one lives much longer, of course, but it is a consumable.

Answer 2

Bearings and brushes can die in the fan (if the ancient brush motor).
If it is brush, then nothing will save. And the worst thing is that these are still used, especially small ones.
If brushless, then I think that constant weak work is more reliable than constant switching on and off.