TFC1212DE Ultra Strong 12cm 120mm DC 12V 3.90A 252CFM 4pin PWM with Speed Sensor Server Inverter Axial Case Cooling Fan

This fan is loud! But when turned down the sound is bearable, while still pushing a lot of air. I currently have this monster cooling my GTX 970 and it keeps it at around 29°c idle. Usual temps are around 35°c. remember though, this fan is made for servers, but if you don't mind some noise, it will be and sound like a jet engine cooling your rig.

This fan's PWM input is not like most. It is actually inverse from the normal PWM signal. ie. a PWM signal of 255 is actually the minimum, while a PWM signal of 1 is the maximum. Keep this in mind if you plan on using this fan for anything other than a project where you can control the exact PWM values. I tried to use this on an Antminer and it did not work for this reason.

The media could not be loaded. if your GPU mining in a enclosed case. This is the last fan you'll ever need. Yes it is extremely loud. But the airflow it moves is insane. Any and all future rigs I build, this will be the only fan. As I do not care about noise, just GPU temps. Although i could not get it to run off a molex adapter. I have 2 of them plugged into 2 4pin fan headers on my motherboard. I will do some research to get all 3 running from molex or even run 2 from 1 fan header. Otherwise it's a really good fan. I will update this review with any problems that occur.

Not to found of these. Both of them had rpm issues with pwm settings. They ramped up at times with no signal to by the controller to do so. Kinda disappointed after only a short time they both died and where replaced with some cheaper ones and each of those are still going strong. Bad bearings I think are in mine both locked up solid only after short period of time running. Save your cash a nd rig buy better fans

Did not work on Antminer S9. Did not turn on at all.For my miner, the only ones that worked are Noctua and the factory version.

This fan is insane. If it isn't mounted, it will fly across your table and if it's laying down, it'll lift itself up.

Fan is great if you want to move a lot of air quickly. I use this for the extreme case where my PC for some reason just isn't cooling and / or something has gone wrong with the water-cooling loop. This fan will kick on and cool down the system until I can find the solution to why it over heated. I believe the blades and housing is metal, so the quality is very good.

When the fan arrived it had noticeable dings and nicks on the blades where they were damaged by impacts during operations prior to my purchase. There is no telling how many hours the electric motor has been fatigued. These fans are not new production. These are very likely damaged fans that were sent in for repairs to their manufacturer, who chose to send replacements back instead. One way or another, there is no mistaking the fact that these fans are used and damaged, doubtlessly disappeared out the factory back door, only to be sold as new production models.