
In general, higher RPM speeds result in higher noise levels, but note that the relation of RPM speed and noise differs from fan size to fan size (e.g. Noise level and RPM speed: Please refer to the dB(A) specification of each individual model for selecting one that fits your requirements regarding noise and performance.Please refer to the specifications of the individual models for details. Note that some models also come with adaptors for 4-pin peripheral connectors, 2-pin or USB connectors, or the OmniJoinTM adaptor set that allows the fan to be connected to proprietary fan headers. However, as explained in this FAQ, 3-pin fans can also be used on most 4-pin headers and vice versa. The 3-pin versions can only be speed-controlled by reducing the voltage (or using the supplied Low-Noise Adaptors in the case of FLX and ULN versions). Choose 4-pin PWM versions if you would like to use the PWM fan speed control of your motherboard (or other devices). The latter can be identified by the “PWM” designation. Connector: Noctua fans are available with standard 3-pin and 4-pin PWM connectors.industrialPPC: ruggedised high-speed versions for challenging environments, black colour scheme.


Product line and colour scheme: In addition to the standard line of premium-quality quiet fans that is easily recognisable by the signature brown colour scheme, Noctua offers 3 dedicated product lines for specific demands:.The latter can easily be recognised by the "5V" or "industrialPPC-24V" designations. Note, though, that there are also 5V and 24V models available for other applications.
#5V PANEL MOUNT LED PC#

square frame and round frame for 140mm size) and depths (e.g. Note that for some sizes there are different shapes (e.g. For example, you might need a 120mm size fan for your water cooling radiator vs a 40mm size fan for your router. Size and shape: The first thing you should determine is what size and shape of fan you need.Use the following criteria to select the model that works best for you: Noctua offers a wide selection of fans for various demands and purposes. Buying guide: Which Noctua fan should I buy?
