The Austrian Noctua revises its PWM chip for more silence.
The principle of the PWM in fans is not yesterday (see), regulating the temperature of the component underneath more just the speed of rotation of the blades. But Noctua improves this principle and will propose in its new range of ventirads a new generation of smart to smooth the impulses sent to the engine often generating a small audible clicks at low speed.
Technology called by the constructor is called DDS for Smooth Commutation Drive, clear rising ridges giving the impetus to fans will not net, but slightly spreading in time, thus eliminating the operation of the fan noise, particularly at low speed. Austrian engineers also worked on these chips to control energy consumption for reduce of 25 to 40% the need electricity compared to the heatpipe without PWM.
Comparison with the previous generation PWM is not specified, which can go immediately less interesting. Always is it that this advance in the field of the silence of operation of the computers is good to take.
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