Average Noise
The PSU’s average noise output is high, given its efficiency levels. A less restrictive fan grille could help in this section.
Fan Noise & Speed Maps @ 28-32 °C – 115V
The fan’s passive operation lasts long enough, and in some regions, it starts removing heat, thankfully at low enough speeds not to make its presence felt. The 30 dBA mark is reached around 580W at 12V, and soon after, the fan’s noise exceeds 45 dBA, with more than 860W at 12V. The compact PCB with relatively small heatsinks on the secondary side and the compact 120mm fan do not help keep the PSU’s noise low, especially under higher loads.
Fan Noise & Speed Maps @ 28-32 °C – 230V
At 230V, the fan speed profile is mostly the same, except for small differences at moderate loads (300-350W).
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The Cybenetics report indicates that this power supply is compliant with ATX 3.1; however, the transient testing results show issues on the 3.3 V rail.
Could you clarify how ATX 3.1 pass/fail determinations are defined in your methodology? Specifically, how are transient deviations on secondary rails, such as the 3.3 V rail, evaluated when concluding overall ATX 3.1 compliance?
Reference:
Cybenetics ATX 3.1 PASS Report
https://www.cybenetics.com/evaluations/psus/2971/
Which transient response results are you referring to? The transient response tests with normal loads, which I do, and without capacitors? These are my tests; they are not included in any ATX spec. I have been conducting these for many years now, and they are there to compare all PSUs with load on all rails directly.
The ATX v3.1 uses an entirely different transient response load scheme, which Cybenetics adopts, to check against this standard.
This standard is open, so you can study it and look at what it says about transient report testing.
based on your experience did unicon caps was better than toshin kogyo or similar with nippon chemicon, rubycon or nichicon ?
I don’t think they are better than the well-known caps, especially the last three brands you mention.
so it’s basically same tier as TK ?
I don’t have a clue unless I check enough capacitors from Unicon and TK
Interestingly, SAMA P uses a different RSY platform and shows excellent results.
Hi, Aris, do you have any idea why BeQuiet lists Cybenetics Gold efficiency and Noise A+ in its marketing materials, when all Pure Power 13 M PSUs achieved Platinum and A++?
Did they change anything after your tests or why?
They can always downgrade the badges, but never upgrade them.
…they certainly can, but what’s the point, from a marketing point of view,
…probably none.
Maybe they’re not sure about the manufacturing tolerances, who knows 👀