Noise and Thermals
Noise
Noise wise, in Normal mode, the rough 2400rpm rotation speed of the CPU's fan means that KLOSS is pretty quiet in normal usage. The 80mm exhaust fan doesn't seem to rotate quickly either, limiting its volume. The pitch of both fans is unobtrusive meaning that your hard disk, especially in the case of the Raptor I used for testing, is going to make a bit more noise than the chassis cooling.In silent mode with the processor frequency drop and the CPU fan's rotational speed dropping, the KLOSS then gets quieter still, falling into the realms of serious quietness. It's never totally silent - moving parts see to that - but to my old ears it gets quite close.