Load Regulation
It measures the stability of the output voltage when the load connected to the power supply varies.
| Test | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
| 10% | 8.198A | 1.986A | 2.006A | 0.993A | 119.979 | 90.97% | 0 | <6.0 | 48.1°C | 0.962 |
| 12.001V | 5.035V | 3.289V | 5.035V | 131.889 | 40.03°C | 115.05V | ||||
| 20% | 17.427A | 2.982A | 3.015A | 1.195A | 239.932 | 93.652% | 0 | <6.0 | 48.59°C | 0.984 |
| 11.994V | 5.031V | 3.284V | 5.02V | 256.198 | 40.53°C | 115.01V | ||||
| 30% | 26.951A | 3.481A | 3.522A | 1.399A | 359.112 | 94.097% | 0 | <6.0 | 49.63°C | 0.991 |
| 11.987V | 5.028V | 3.28V | 5.005V | 381.645 | 41.04°C | 114.97V | ||||
| 40% | 36.583A | 3.981A | 4.03A | 1.603A | 479.492 | 93.953% | 0 | <6.0 | 51.99°C | 0.994 |
| 11.980V | 5.025V | 3.275V | 4.99V | 510.351 | 41.92°C | 114.93V | ||||
| 50% | 45.829A | 4.98A | 5.047A | 1.809A | 599.25 | 93.457% | 0 | <6.0 | 53.11°C | 0.996 |
| 11.974V | 5.021V | 3.269V | 4.975V | 641.211 | 42.46°C | 114.89V | ||||
| 60% | 55.179A | 5.981A | 6.057A | 2A | 719.706 | 92.594% | 954 | 20 | 42.63°C | 0.997 |
| 11.961V | 5.017V | 3.269V | 4.962V | 777.296 | 54.25°C | 114.85V | ||||
| 70% | 64.449A | 6.989A | 7.082A | 2.225A | 839.487 | 91.811% | 478 | 6.6 | 43.23°C | 0.997 |
| 11.953V | 5.009V | 3.262V | 4.945V | 914.366 | 68.18°C | 114.81V | ||||
| 80% | 73.806A | 7.989A | 8.103A | 2.331A | 959.456 | 90.884% | 677 | 10.3 | 43.55°C | 0.997 |
| 11.944V | 5.007V | 3.258V | 4.933V | 1055.702 | 60.11°C | 114.77V | ||||
| 90% | 83.503A | 8.494A | 8.606A | 2.439A | 1079.261 | 89.982% | 1093 | 24 | 44.41°C | 0.997 |
| 11.937V | 5.003V | 3.253V | 4.921V | 1199.431 | 67.53°C | 114.72V | ||||
| 100% | 93.025A | 8.993A | 9.138A | 3.065A | 1199.302 | 88.963% | 1654 | 35.4 | 45.57°C | 0.997 |
| 11.928V | 5.004V | 3.25V | 4.894V | 1348.1 | 65.16°C | 114.68V | ||||
| 110% | 102.494A | 10.001A | 10.259A | 3.071A | 1319.897 | 88.093% | 1973 | 40.7 | 46.37°C | 0.996 |
| 11.919V | 4.999V | 3.246V | 4.884V | 1498.303 | 62.99°C | 114.64V | ||||
| CL1 | 0.116A | 14.464A | 14.679A | 0A | 121.293 | 84.86% | 584 | 7.9 | 40.93°C | 0.965 |
| 11.998V | 4.992V | 3.249V | 5.045V | 142.934 | 48.81°C | 115.03V | ||||
| CL2 | 0.115A | 24.173A | 0A | 0A | 121.275 | 83.641% | 1343 | 30.1 | 41.77°C | 0.965 |
| 12.002V | 4.96V | 3.286V | 5.052V | 144.995 | 46.79°C | 115.03V | ||||
| CL3 | 0.115A | 0A | 25.633A | 0A | 83.881 | 75.954% | 1577 | 34.3 | 41.49°C | 0.959 |
| 11.997V | 5.029V | 3.218V | 5.047V | 110.437 | 45.05°C | 115.05V | ||||
| CL4 | 100.566A | 0A | 0A | 0A | 1199.881 | 89.762% | 1081 | 23.7 | 44.01°C | 0.997 |
| 11.931V | 5.028V | 3.274V | 4.99V | 1336.756 | 62.57°C | 114.68V |
Load regulation is within 1% at 12V and 5V, but pretty loose at 3.3V.
| Test | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
| 20W | 1.237A | 0.496A | 0.5A | 0.197A | 19.993 | 69.931% | 0 | <6.0 | 47.27°C | 0.884 |
| 12.005V | 5.043V | 3.298V | 5.067V | 28.589 | 36.14°C | 115.08V | ||||
| 40W | 2.723A | 0.694A | 0.701A | 0.296A | 39.994 | 81.375% | 0 | <6.0 | 51.39°C | 0.94 |
| 12.005V | 5.041V | 3.296V | 5.062V | 49.146 | 37.68°C | 115.07V | ||||
| 60W | 4.209A | 0.893A | 0.901A | 0.395A | 59.995 | 86.433% | 0 | <6.0 | 45°C | 0.963 |
| 12.004V | 5.04V | 3.294V | 5.058V | 69.416 | 38.78°C | 115.06V | ||||
| 80W | 5.690A | 1.092A | 1.102A | 0.495A | 79.93 | 88.653% | 0 | <6.0 | 50.94°C | 0.96 |
| 12.003V | 5.038V | 3.293V | 5.053V | 90.158 | 39.31°C | 115.06V |
A glance at the light-load table is always useful, as the PSU typically operates at light loads.
Ripple Suppression
Ripple in power supplies refers to the small, unwanted AC voltage fluctuations superimposed on the DC output. It occurs due to imperfect filtering during the AC-to-DC conversion. Lower ripple is highly preferable because it ensures a cleaner, more stable DC output, reducing noise and potential interference in sensitive electronics, improving performance, and extending component lifespan. High ripple can cause instability, overheating, or damage to connected devices.
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
| 10% Load | 14.4 mV | 10.0 mV | 10.1 mV | 8.2 mV | Pass |
| 20% Load | 14.6 mV | 10.5 mV | 10.2 mV | 8.7 mV | Pass |
| 30% Load | 15.8 mV | 11.0 mV | 11.2 mV | 9.1 mV | Pass |
| 40% Load | 16.6 mV | 11.0 mV | 11.0 mV | 10.0 mV | Pass |
| 50% Load | 17.3 mV | 11.2 mV | 11.1 mV | 10.0 mV | Pass |
| 60% Load | 14.1 mV | 11.1 mV | 10.9 mV | 11.2 mV | Pass |
| 70% Load | 14.8 mV | 12.7 mV | 12.7 mV | 14.1 mV | Pass |
| 80% Load | 15.7 mV | 13.7 mV | 13.8 mV | 14.6 mV | Pass |
| 90% Load | 16.6 mV | 14.1 mV | 14.6 mV | 14.8 mV | Pass |
| 100% Load | 16.1 mV | 14.2 mV | 14.4 mV | 15.1 mV | Pass |
| 110% Load | 16.3 mV | 15.1 mV | 15.1 mV | 15.9 mV | Pass |
| Crossload 1 | 14.2 mV | 10.5 mV | 10.9 mV | 7.9 mV | Pass |
| Crossload 2 | 15.1 mV | 16.9 mV | 11.2 mV | 8.1 mV | Pass |
| Crossload 3 | 14.1 mV | 10.4 mV | 13.0 mV | 8.1 mV | Pass |
| Crossload 4 | 15.9 mV | 13.4 mV | 13.6 mV | 13.3 mV | Pass |
Ripple suppression is good overall.
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I have the 1200w Dark power 14, Amazing psu and completely silent too all round.
The addition of a semi-passive fan mode switch was much requested for Be Quiet to implement to there psus and the Dark power 14 delivers that, now the fan doesn’t have to constantly run for complete silence at most normal loads.
My only gripe is the cables could be more flexible but that is a non issue to the performance being so excellent. I just have to wait till I can buy some replacement cables for the psu.
Which components does the aluminium radiator actually touch?
so this PSU was use main caps TK or Rubycon, on the sheet was listed Rubycon but in the photos says it was TK or BeQuiet gonna change their main caps config on a retail product so you just listed in a datasheet usinf Rubycon main caps ?
My mistake sorry. It has TK caps. I don’t know why I left Rubycon in the part analysis. Fixed that.
Since Spain is my home market i want to ask if you know anything about this power supply from a local Brand called UNYKAch. They claim it is cybernetics gold certified but couldn’t find anything about it in the database. https://unykach.com/es/consumo/fuentes-de-alimentacion/fuentes-de-alimentacion-atx/fuente-de-alimentacion-atx-atilius-3-1-750w-gold-uk213750/
Hi! They sent samples for testing to Cybenetics, but they are not tested yet.
Good to know.
Thanks for the review! We’ll see in the 850W,1000W reviews the Pure Power 13 M numbers together but if the lower wattage models are in line with this one then in some areas the Pure Power 13 M is actually better so hard to justify spending this much more for this one. Which one would you pick? Be Quiet is on the right path thats for sure and should be on buyers list performance wise but reliability matters more since we don’t want to burn down the house haha, but you can read horror stories about every brand so who knows which to pick. Hopefully my 2019 Seasonic Focus Gold will hold on for a while.
Even the cables don’t seem to be much more premium, the cables with the Pure Power 13 M are rather stiff some say, would be nice if other than the overall cable quality you would mention flexibility aspect of them, often overlooked quality.
Oh, good timing for this review ;-). Managed to order this psu, for 250€ @Alternate.
It will replace my older BQ DP 12 850W, for more future proof.