To the Coolink X9 fan
"The X9-1100 deserves special mention for being very, very quiet, even at the stock voltage. No other 92mm fans that we know of can boast such a low noise level at 12V: 20 [email protected]
is very unusual. For this reason, it deserves a recommendation as a fan that can be used in a quiet system without requiring modification. In fact, undervolting this fan is a bad idea; the improvement in noise level does not justify the loss of airflow."
I have just bought one of these for my P150 to cool the HDD. This fan is a little dissappointing, because it has a clearly hearable vibration (motor)-noise, even az 8V (780RPM), and it just only gets louder, when useed at the default 12V.
I think I will have to buy the 92mm Nexus fan, I hope, that will be better.
Just it is twice as expensive.