Noctua NF-A14 iPPC-24V-3000 Q100 IP67 PWM, Heavy Duty Cooling Fan, 4-Pin, 3000 RPM, 24V Version (140mm, Black)

High quality and durable.Note this is a 24 volt fan and computer fans are typically 12 volt. You can use this in a computer, but that is not the intended use and you will only be running the fan at a maximum of half power. That is why there are so many reviews saying that it doesn't move much air, when in fact it can do so when running at 24 volts.If you want to use this fan in a computer, Noctua sells a 12 volt version, also on Amazon, and it's $3 cheaper, so you should probably buy that instead. You will be able to run that fan at full power in a computer. If you want to run that fan more quietly, you should be able to do so using your BIOS or fan control software.

Facile a installer, très haute qualité et très peu bruyant. Mon PC n'a que du Noctua 120 et 140mm et il ne fait aucun bruit. Même à haute vitesse le peu de bruit n'est pas dérangeant.

To all the ignorant people who bought this 24V fan and then write 1-star reviews because it doesn't work as expected in a PC (which uses 12V for the fans) - admit it was YOUR fault for ordering a wrong product for your own application. Own up and learn from YOUR mistakes.From Noctua's website: "Noctua’s industrialPPC (Protected Performance Cooling) line comprises ruggedised high-speed versions of the company’s award-winning retail models."This particular model runs on 24V, and at (up to) 3000 RPM, with possibility of PWM control.To use this fan, you need to use a 24V power supply. The fan moves a lot of air when it's running at full speed (3000 RPM). In my opinion it's not that loud even at full speed, but depending on your requirements you may want to PWM control it to regulate the speed according to your needs. The PWM control signal is the same as the one used for PC fans: 5V, 21-29 KHz frequency (25 KHz recommended).The motor driver IC inside the fan is AEC-Q100 qualified - this is a stress test qualification for ICs used in automotive environments. This guarantees a certain high level of quality and reliability. There are several grades of AEC-Q100, differing in the ambient temperature range. Noctua doesn't state which grade their qualification achieved. But even the lowest grade requires operation in ambient temperature range of -40°C to +85°C.The fan has IP67 water and dust protection. This means completely protected against dust, and protected against water immersion to a depth of 1 m for 30 minutes.All these features distinguish it from regular PC fans and makes it more suitable for industrial applications involving one or more of the following: elevated temperatures, high dust levels, moisture or liquid splashes (e.g. flood coolant).I use it for forced cooling of an electric motor in a lathe. The lathe motor is a 3-phase motor, it's speed is controlled by a VFD (variable frequency drive). It can achieve usable torque even at very low speeds, but the motor's built-in fan blades then also turn very slowly and don't provide adequate cooling. So, the fan blades are removed, and the Noctua fan is used to cool the motor. NTC thermistors are installed inside the motor, an Arduino Nano microcontroller board monitors its temperature and controls the Noctua fan's speed using PWM. I have both 12V and 24V power supplies in my lathe control box, so I could choose either 12V or 24V fan. But for some reason Noctua's iPPC 12V 3000 RPM fan doesn't have the IP67 rating (or AEC Q100), the 24V version has both.

Ventole da 140 veramente otttime, utilissime sia per dissipazione in/out in case, oppure come sostituta sul dissipatore della cpu, o ancor meglio su radiatori.

Impresionante. No lo dudéis, todos los productos Noctua valen hasta el último céntimo.