Transient Response
20% Load – 20ms
| Advanced Transient Response 20% - 50 Hz | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.204V | 12.002V | 1.66% | Pass |
| 5V | 5.047V | 4.932V | 2.28% | Pass |
| 3.3V | 3.333V | 3.149V | 5.52% | Pass |
| 5VSB | 5.043V | 4.985V | 1.14% | Pass |
50% Load -20ms
| Advanced Transient Response 50% - 50 Hz | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.169V | 12.052V | 0.96% | Pass |
| 5V | 5.040V | 4.925V | 2.28% | Pass |
| 3.3V | 3.324V | 3.133V | 5.74% | Fail |
| 5VSB | 4.982V | 4.913V | 1.39% | Pass |
For the category’s standards, the transient response is decent at 12V, average at 5V, and mediocre at 3.3V, where the PSU fails in the second test. As for the 5VSB rail, who cares? From the moment it keeps its voltage within the specified range, everything is fine there.
Transient Response ATX v3.1 Tests
The PSU passes all ATX v3.1 transient response tests, but the 3.3V rail drops below 3.2V.
The 12V rail performs well here.
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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?