Summary: Usage ===== This is 40mm x 20mm fan. I bought it to replace a loud fan in the Mini-ITX power supply in my home server. This is the common size fan for a Mini-ITX PSU. Noise ===== The fan is fairly quiet, but certainly not silent, I have built several very quiet home theater PCs and have experience with quiet fans. 40mm fans are typically very noisy as they tend to spin at a high speed.
Summary: This is a great fan! It worked just fine out of the box and is very quiet. This fan would be good for a lot of purposes, one of which being a small case-mounted cooling fan for a Raspberry Pi. So why did I give it 4 stars? I purchased two of these fans for my 3D printer. One to go on a motor to keep it cool during long prints and the other to focus air at the extruded plastic.
Extremely quiet! But will it remain quiet for all 30000 hours?
J. Dlouhy, Amazon
6 August 2014
Summary: Ordered two of these for an older Mini ITX - Atom 330 based Shuttle machine. The PS is external, the only fan in the case (a 40x40x10 attached to the north bridge heat sink) was well past its prime. I had already added an additional 40x40x20 fan on the wall of the case - but that SUNON model was about 3 times as loud as these fans with the same air flow. I ripped out the old units and installed two of these. WOW! Decent air flow without any of the noise. Very pleased!
Summary: I purchased three of these 40mm fans to replace three noisy fans in a 24 port Netgear port smart switch. These fans, do not come with the third wire for variable control, so they run at maximum rpm all the time. Even with three of them, my switch almost sounds fanless. If your fan does not power up initially, make sure to check and move the initial pin configuration around.
Worked great to cool down my Northbridge. Scythe is a reliable brand.
Peter Chan, Amazon
17 July 2014
Summary: Put this on my northbridge of my gigabyte DS3L motherboard with a zip tie. Scythe fans are quiet and seem to last a long time without breaking down. Something you need on a machine that is running all the time.
Summary: I purchased 2 for my VRM's on my motherboard as I was going to Water cooling and still needed to move air across them. The move less air than I thought they would but I don't hear them at all so I'm ok with it. The two of them keep it under 140F with an infrared thermometer. My 220W CPU pulls a lot of power and haven't had any issues.
Summary: I bought this fan to replace the whiney one that came with an ASUS C8MH70-I. This fan is much quieter, but since it is natively a 2-pin fan, the motherboard doesn't see it when connected with the 3-pin adapter. The result is that I need to go to BIOS/EFI each time to bypass the fan error. Hopefully I don't have to restart this computer very often.