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.
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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.
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chromax: black fans with swappable anti-vibration pads in various colours, ideal for coordinating the fans with individual build colour scheme.redux: streamlined, more affordable packages for price-conscious users, grey 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. Voltage: Most Noctua fans are 12V, which is the standard for PC applications.120x25mm rather than 120x15mm) for the best possible performance. If you have enough space, always choose the bigger depth fan (e.g. round frame fans for most 140mm CPU coolers vs square frame fans for most 140mm water cooling radiators). 25mm and 15mm for 120mm size, 20mm and 10mm for 40mm size, etc.) available, so also check which shape and depth is required (e.g. 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.
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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?