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A 120 mm variable speed fan. If they use fans at all, quiet PCs typically use larger-than-usual low-speed fans with quiet-running motors and bearings. The 120 mm size is common, and 140 mm fans are used where cases or heat sinks allow them. Quiet fan manufacturers include Nexus, EBM-Papst, [30] Yate Loon, Scythe, [31] and Noctua. [32]
When it comes to fan types, there’s no shortage of options, but many experts say the ceiling fan blows the competition away—for cooling, if not necessarily style. These fans push down a column ...
Bladeless fans are known for their quiet operation, but some might still produce noticeable noise when running at higher speeds. For your home or office settings, look for fans in the 20 to 40 ...
Fans are used when natural convection is insufficient to remove heat. Fans may be fitted to the computer case or attached to CPUs, GPUs, chipsets, power supply units (PSUs), hard drives, or as cards plugged into an expansion slot. Common fan sizes include 40, 60, 80, 92, 120, and 140 mm. 200, 230, 250 and 300 mm fans are sometimes used in high ...
Larger fans are usually used for cooling case, CPUs with large heatsink and ATX power supply. Square 80 mm and 92 mm fans are used in less demanding applications, or where larger fans would not be compatible. Smaller fans are usually used for cooling CPUs with small heatsink, SFX power supply, graphics cards, northbridges, etc.
The be quiet! trademark was registered in 2002 by Listan GmbH. Initially only PC power supplies equipped with noise-minimizing technology were marketed under the brand name. From 2008, it was decided to add products for the cooling of PCs (CPU coolers and case fans) to the be quiet! range in addition to power supplies.
This technology was also introduced on "e-stepping" Opterons, however it is called Optimized Power Management, which is essentially a re-tooled Cool'n'Quiet scheme designed to work with registered memory. Cool'n'Quiet is fully supported in the Linux kernel from version 2.6.18 onward (using the powernow-k8 driver) and FreeBSD from 6.0-CURRENT ...
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