Average Noise
The PSU’s average noise output exceeds 31 dBA, so I cannot call this PSU quiet. I will analyze below its noise map.
Fan Noise & Speed Maps @ 28-32 °C – 115V
The fan’s passive mode lasts for a very short period, and, weirdly, it requires a load on the minor rails to activate. Generally, the fan speed should have more operation steps, ranging from light to loads of up to 690W. Currently, from around 10W to 680W, noise is mainly in the 20-25 dBA range, which notably affects the average noise output. The 30 dBA mark is passed at 710W, and quickly noise enters the 40-45 dBA range. With anything above 775W at 12V, the PSU’s fan will be loud.
Fan Noise & Speed Maps @ 28-32 °C – 230V
The 230V fan speed profile is identical to the 115V one, with some additional noise at high loads, including regions of 45-50 dBA. Typically, the 230V fan speed profile should not allow for higher noise output, especially at high loads. However, the unit’s secondary side is less concerned with what is happening on the primary side, as the latter achieves higher efficiency at 230V, while for the secondary side, it is the same regardless of the incoming voltage level at the primary side. If some parts on the secondary side become excessively hot, they will increase the fan’s speed.
Hello Aris any info for new Deepcool SFX unit ?