120mm High Airflow Computer Fan 6500 RPM Dual Ball Bearing PWM PC Fan Asic Antminer Replacement Fan for Computer Case Bitcoin (BTC) Mining Rig Machine, 4Pin - 1 Pack

Product arrived in a timely manner in perfect condition.

Definitely moves a lot of air with good force! Blew my work gloves and some papers off work bench during bench test.Measured 80 db at about 1.2KHz, so not that noisy.Time will tell if it holds up, but looks well built.Bought three more as I have more needs - and stocking up for the apocalypse! ;)

These fans move a lot of air, but are also quite loud. I got the lower powered 2.7A version, hoping they would be relatively quiet, but they are not. Even at the lower speeds (PWM controlled), they are just really loud. For my desktop gaming PC, this is a deal breaker. I had them installed for a while, couldn’t deal with the noise, then uninstalled them and put my previous, quieter fans back in.However, these can move a LOT of air. I can’t measure it exactly, but they do blow pretty hard when needed. If you’re really using these in an application where cooling is of primary importance, and the noise won’t be an issue for you, they would probably be great. The cord is 16 inches long, which is not super long, but ok. My other issue is that these did not come with mounting screws. I don’t typically have extra fan screws laying around, so I used some generic M5 screws, but they didn’t fit as well.I’m subtracting one star for not coming with screws, and one more star for being quite noisy (definitely too noisy for a desktop PC). If quiet fans are a necessity for you, then you should probably pass on these, but if you need lots of airflow regardless of the noise, these fans should work great.Final Rating: 3 stars.

No problems.

I ordered these to make my own custom cooling cabinet. I will update after finishing it.

When other reviews said this thing is powerful & loud....I thought they were joking. Or, exagerating.P.S. There is a GITHUB app simply called FanControl that will let you control the fan % in windows, useful even if you CAN control the fan speed in the bios. 30% is the sweet spot it seems. Same noise as old fans, with x4 the airflow, probably more.Personally, I've yet to ever run into a "fan" noise issue personally that bothered "me" specifically.I've always found the "White noise" of them super relaxing.Then I plugged these fan in, and wow, super powerful, also super loud.HOWEVER, you can indeed set the power way lower to them in your BIOS as with all fans.I got the sound "around" the same as my old fans, meanwhile at least x4, maybe x6 the amount of air is being pushed through compared to my old fans.So in short, make it just as quiet as your old fans and = STILL getting WAY more air flow.I had to change these to PWM control in the bios and set them to silent. I hardly hear them now. My old fans I ran at 100% full time and couldn't even get close to the airflow these get.Would 10/10 get for next PC

These are powerful fans where more extreme cooling is needed such as with a bitcoin mining rig or other high performance computing application. I would not recommend them for the average PC installation as they are LOUD (and draw more than usual current), otherwise you would have to muffle the sound perhaps. They also draw more current than the usual PC fans at full speed, so be sure to check your motherboard specifications as they draw over 3 amps at full speed, and about 1.7 amps at half speed. The connector is a standard 4 pin molex for typical Intel or AMD ATX motherboards, and a square 4 pin molex connector is supplied as well. Sure they are powerful and will cool your rig, but get ready for some loud fan noise. These would be perfect for an unattended data room application.

these work great for keeping my obnoxious gaming consoles nice and happy, they are bigger than i expected but happy about it, they also seem much better quality and performance than all who come before them ... there have been many!