My be quiet heat sink is giant and came with two fans. And I have the ability to add a third. If one of the two fans fail i’d guess temps may raise a few degre

My be quiet heat sink is giant and came with two fans. And I have the ability to add a third. If one of the two fans fail i’d guess temps may raise a few degrees and that’s it. I could even manually test it with one fan and light loads to check one fan performance.