Twinkle Bay SUNON GM1204PQV1-8A Maglev Cooling Fan, 40mm by 40mm by 28mm with 3 Pin 3 Wire Connector with PWM control (12V DC, 2.8 W)

if you want a silent fan get another fan, if you want a fan that makes air its bitch then this is the fan for you. Drawback? no mounting screws, but i solved this issue with my power drill(use a lager drill bit than the hole drill half way through use old screws)

These fans move a boatload of air, and are like mini jet engines with the requisite amount of sound associated with that air movement. if you need a turbocharged little fan and a small space this is the thing to get. I did notice that these tend to impart quite a bit of RF noise onto any circuit there attached to so some bypass capacitors would be a good idea.

Great fan moves some air keeps my rc truck running cool only problem was fan blades had some cips in them

The 40x10 fan I got to exhaust the smoke and odor from my 3D printer/laser cutter wasn’t cutting it. This is still compact, but has MUCH better air flow. It’s not exactly silent, but it’s a lot quieter than the 120mm fan I was thinking of using.

This thing moves air. Doesn’t care about your ears. Runs at 13k RPM when plugged into my motherboard at 100%. Cools an Nvidia Tesla M40 at full load attached to a 3d-printed fan adapter even turned down to 60%. Still audible at that speed.Pros:High performanceCons:“Weeeeeeeeeeeeeeeeeeeeeeee”