120mm PWM Case Fan Replacement for Antminer S3 S5 S5+ S7 S9 T9 L3+, 190CFM, Dual Ball Bearing, 4-Wire 4-Pin Connector (Model: FFB1212EHE)

I purchased two of these fans for a non-bitmining application -- specifically for cooling and ventilation -- and they work beautifully! At full-throttle, they are a bit noisy, which is to be expected. However they also generate tremendous airflow... enough so, that you might be shocked if you've never dealt with a fan like this before!Since these are PWM fans, they can be throttled as desired, with the appropriate speed controller. (I use the Noctua NA-FC1 4-pin PWM Fan Controller, which is a perfect compliment.) Alternatively, if you're connecting these directly to a component already designed for a PWM fan like this -- particularly a BitMiner -- the speed will be controlled automatically.In short, if you're looking for a fan like this, you won't be disappointed.

I use this in an Arduino project with my 12 pipe aluminum radiator, it takes two of them. I find that a PWM level of 150 out of 256 moves plenty of air through the radiator with more flow available if I detect the fluid temp is too high. I am cooling the hot output from a 160mm water block with 4 peltier junctions sandwiched between 2 water blocks and the cold side can freeze the water. I think they are priced well for what you get.

Just installed 4 of these to help cool down a 420 Radiator. At low speeds nice and quite but when you need airflow even at 50-60% speed they push 3x the air then the mfg fans. yea its going to get noisy but are you willing to deal with that to keep you computer cool and operating better.. I do.the only problem im having, i have yet to find someone that makes a PWM contoler that can be run with software. I like to controle the speeds per fan .. When you have 10+ going each one has its on needs and dont all have to be at the same speed.

I am trying to quiet down my Bitcoin mining Farm. I had one fan fail on an Antminer S9, so I purchased this unit as a quick replacement. To my suprise, this unit is running cooler, and while loud, it's a White noise loud. The stock S9 fans have a 800Hz noise coming from them that I can't filter out. So, I am purchasing more of these units to replace the factory fans to quiet things down.

Replacement fan for a Bitmain (and most other) miners. It works, it's noisy as all heck, not particularly high quality, but it gets the job done and that's all you really need when you're mining.

Not good quality. Far from OEM standards

these are the same construction and blade layout as the yate loon d12bm-12d. the yate loon are 2.3 amp vs these are 3 amp. so the overall speed setting is different, but they cool the same as the yate loon at the same rpm. my 1 l3+ has 2 original yate loon fans at 11% speed and get 1800 rpm 65 c temp. these fans have to be set at 30% to get the same 1800 rpm 65 c temp. so same result, diff speed in the miner. def swap out both fans so that the rpm will match.

My Antminer S9 had a fan go out - this was a direct replacement and IMHO it's quieter. Works like a charm.