be quiet! Dark Power 13 850W PSU Review – Impressive Efficiency, Dead Silent & Decent Performance

Load Regulation

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.252A 1.965A 1.969A 0.993A 84.998 88.345% 371 <6.0 40.23C 0.966
12.072V 5.088V 3.352V 5.037V 96.212 44.48C 114.85V
20% 11.580A 2.95A 2.953A 1.194A 169.935 92.057% 385 <6.0 40.85C 0.987
12.006V 5.085V 3.353V 5.025V 184.597 45.53C 114.82V
30% 18.237A 3.443A 3.448A 1.397A 254.941 93.29% 389 <6.0 41.13C 0.992
12.002V 5.082V 3.35V 5.01V 273.28 46.36C 114.8V
40% 24.921A 3.94A 3.944A 1.603A 340.037 93.336% 445 8.8 41.80C 0.994
11.991V 5.077V 3.347V 4.992V 364.316 47.51C 114.77V
50% 31.245A 4.927A 4.935A 1.808A 424.837 92.969% 497 12.4 42.37C 0.995
11.981V 5.074V 3.344V 4.979V 456.968 48.62C 114.73V
60% 37.558A 5.917A 5.928A 2A 509.286 92.743% 570 12.2 42.71C 0.995
11.970V 5.07V 3.34V 4.965V 549.136 49.32C 114.71V
70% 43.946A 6.91A 6.925A 2.223A 594.652 92.215% 652 15.8 43.17C 0.995
11.959V 5.066V 3.336V 4.949V 644.848 50.27C 114.67V
80% 50.353A 7.905A 7.924A 2.329A 679.481 91.515% 738 22.3 43.62C 0.995
11.947V 5.061V 3.331V 4.938V 742.479 51.73C 114.64V
90% 57.168A 8.402A 8.413A 2.435A 764.871 90.811% 1000 26.9 44.01C 0.995
11.936V 5.057V 3.328V 4.928V 842.268 53.22C 114.6V
100% 63.734A 8.903A 8.933A 3.069A 849.706 89.959% 1309 34.6 45.21C 0.994
11.924V 5.054V 3.325V 4.887V 944.554 55.27C 114.57V
110% 70.176A 9.902A 10.028A 3.072A 934.305 89.139% 1639 40.3 46.52C 0.993
11.914V 5.049V 3.321V 4.883V 1048.144 57.45C 114.54V
CL1 1.998A 14.265A 14.311A 0.492A 146.404 87.767% 639 15.4 40.02C 0.985
12.008V 5.061V 3.333V 5.079V 166.81 45.49C 114.83V
CL2 1.998A 23.069A 0.989A 0.491A 146.395 86.492% 664 16.1 41.44C 0.985
12.010V 5.054V 3.336V 5.093V 169.259 48.57C 114.82V
CL3 1.994A 0.986A 22.308A 0.495A 105.715 84.307% 598 14.3 41.00C 0.977
12.032V 5.069V 3.327V 5.052V 125.392 50.31C 114.84V
CL4 70.342A 0.987A 0.991A 0.498A 849.889 90.609% 986 26.7 45.03C 0.994
11.929V 5.068V 3.331V 5.023V 937.979 55.99C 114.58V

Load regulation doesn’t look good in the graphs above, mainly because of the tough competition. I am satisfied with a 1% deviation, which is the case at 5V. Still, the PSU scores in the last place in this graph, and not only.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 8.5 mV 12.5 mV 13.6 mV 11.5 mV Pass
20% Load 9.8 mV 13.0 mV 15.0 mV 10.7 mV Pass
30% Load 40.2 mV 13.5 mV 17.0 mV 11.5 mV Pass
40% Load 36.3 mV 21.0 mV 32.4 mV 16.3 mV Pass
50% Load 16.4 mV 15.6 mV 20.2 mV 11.1 mV Pass
60% Load 14.8 mV 16.1 mV 18.1 mV 11.5 mV Pass
70% Load 15.5 mV 16.3 mV 19.1 mV 12.3 mV Pass
80% Load 16.1 mV 16.9 mV 19.6 mV 13.1 mV Pass
90% Load 17.9 mV 18.1 mV 21.4 mV 12.8 mV Pass
100% Load 25.4 mV 20.8 mV 24.1 mV 14.2 mV Pass
110% Load 27.5 mV 21.6 mV 26.4 mV 14.6 mV Pass
Crossload 1 13.0 mV 15.1 mV 19.5 mV 12.6 mV Pass
Crossload 2 11.0 mV 21.7 mV 19.0 mV 11.6 mV Pass
Crossload 3 9.3 mV 13.6 mV 16.9 mV 10.9 mV Pass
Crossload 4 25.6 mV 21.4 mV 21.3 mV 13.6 mV Pass

Ripple suppression is decent.

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