Noctua NF-A9 PWM, Premium Quiet Fan, 4-Pin (92mm, Brown)

I understand why these fans cost what they do. Theyre absolutely silent running at 30% and lower, and still extremely quiet and pleasant sounding at higher RPMs (nice low pitch, no whining, and still very quiet). At 30% and lower, I cannot hear anything. I can feel the air hitting my eardrum if I stick my head in the case, but thats it. These fans are impeccable.

I bought three 92mm PWM fans to test, this Noctua NF-A9, the CoolerMaster SickleFlow 92, and the Arctic F9. The noise level on all at full speed is about the same (within 1dB from a foot away), with the Noctua the quietest, and this Arctic F9 the loudest. But, you will likely not hear any of them if they arent running at full speed.

Fantastic little fan from Noctua! Its incredibly quite and seems to do the job well. I recommend

Was noisier than the OEM fan at any speed. Just crapped out after 15 months.

Great quality fans as always from Noctua.

As is mostly the case with Noctua they designed a good fan here. Does exactly what I need for its size and is very quiet at the same time. Far quieter at full speed than many others. Not for the faint of wallet though.

I was a bit concerned about the caompatiblity of this fan for the Dell SPX 8940. Many review has issue of Dell BIOS error with the fan installed. I also ran into the BIOS error. But with try and error, I finally found a way to install it w/o error. The XPS 8940 will alway check h/w whenever you make any changes. The Noctua fan is incompatiable with Dell, then it will give error after the switch. However, with the Y-adapter, i installed both the Noctua and the original Dell fan, and it pass the inspection w/o error. You can disconnet the Dell fan, but I use the extension cord and mounted the Dell fan to the front. The temperature of my two hard drives lowered by 5 degree C which were running very hot.

Great fan. Added to my NH-D9L for a little extra umph in cooling.

I used this fan to replace the 14mm fan on a low profile cpu cooler. It runs quietly and keeps an 84 watt I5 cool under full cpu loads.

Great fan but needed to check for noise, then return until received a quiet fan.