Average Noise
The average noise output is dead low.
Fan Noise & Speed Maps @ 28-32 °C – 115V
The fan’s passive operation lasts long, and if you don’t exceed 65W combined power on the minor rails, it goes up to 700W, which is impressive! At full load, the PSU’s noise is within the 20-25 dBA range.
Fan Noise & Speed Maps @ 28-32 °C – 230V
With 230V input, the fan speed profile is identical, with the only difference at higher than 700W loads.
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Ripple suppression is IMHO even remarkable, not only good. I compare to the SilverStone DA750R Gold review on Tomshardware, which is a very similar PSU, probably build on the identical Andyson platform (P32).
Just compare the part analysis of the Silverstone and the Sharkoon, the inner build is very similar with some light benefits for the P20 (like the better fan):
https://cdn.mos.cms.futurecdn.net/CWhpy3Gr4RFLT4ycbF7Xi7-970-80.jpg
Heatsinks and layout are identical. Ignore what the review says (“Internally, the DA750R utilizes a platform from HKC and incorporates Ltec, Teapo and Polycap capacitors”) – this is not true if you check the pictures and they admit the error in the comments.
Coming back to ripple supression, the Tomshardware-Review of the DA750R by quote: “Ripple suppression is outstanding for a unit of this class, with maximum ripple levels of 28 mV on the 12V rail, 18 mV on the 5V rail, and 18 mV on the 3.3V rail, well within the industry standard limits for this tier.” If this is truly outstanding, then the PA20 750w should be even better, as it has even lower mVs. Whats better than outstanding? Certainly not the word “good”.
Anyone knows the OEM of the P10-series?