Average Noise
The PSU’s average noise output is below 30 dBA at both voltage inputs I tried, but still not competitive.
Fan Noise & Speed Maps @ 28-32 °C – 115V
The semi-passive mode operates at approximately up to 250W at 12V, with a minimal load on the minor rails. Higher loads on the minor rails restrict the semi-passive mode’s operation. Once the fan starts to spin, it does so at high enough speeds to produce over 25 dBA noise. Typically, there should be several intermediary modes to offer a smoother transition to the fan’s louder operation. With more than 800W at 12V, noise exceeds 30 dBA, and the 35 dBA mark is passed at around 880W. All in all, the fan speed profile requires further refinement to reduce the unit’s overall noise output. A less restrictive fan grille would also help.
Fan Noise & Speed Maps @ 28-32 °C – 230V
The 230V fan speed profile minimizes the 30-35 dBA range, and the 35-40 dBA zone is also a bit smaller, so the average noise output drops.
Thanks for a review crmaris. Will you be doing a review of PCCooler YS1000?
I think I have them too somewhere 🙂