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% | 8.095A | 1.987A | 1.983A | 0.978A | 119.996 | 86.036% | 0 | <6.0 | 44.72°C | 0.957 |
| 12.155V | 5.031V | 3.329V | 5.114V | 139.475 | 40.47°C | 114.87V | ||||
| 20% | 17.198A | 2.983A | 2.977A | 1.176A | 239.957 | 90.134% | 0 | <6.0 | 45.16°C | 0.967 |
| 12.156V | 5.028V | 3.326V | 5.102V | 266.221 | 40.56°C | 114.83V | ||||
| 30% | 26.622A | 3.482A | 3.475A | 1.375A | 359.201 | 91.232% | 861 | 24.9 | 41.25°C | 0.969 |
| 12.138V | 5.026V | 3.324V | 5.091V | 393.724 | 46.38°C | 114.79V | ||||
| 40% | 36.124A | 3.98A | 3.974A | 1.575A | 479.57 | 91.384% | 857 | 24.8 | 41.82°C | 0.974 |
| 12.135V | 5.025V | 3.322V | 5.08V | 524.786 | 47.35°C | 114.75V | ||||
| 50% | 45.219A | 4.978A | 4.972A | 1.776A | 599.323 | 91.038% | 851 | 24.6 | 42.43°C | 0.979 |
| 12.137V | 5.022V | 3.319V | 5.068V | 658.329 | 48.51°C | 114.7V | ||||
| 60% | 54.353A | 5.978A | 5.971A | 1.978A | 719.837 | 90.418% | 844 | 24.4 | 42.66°C | 0.983 |
| 12.143V | 5.019V | 3.316V | 5.056V | 796.126 | 49.28°C | 114.66V | ||||
| 70% | 63.425A | 6.979A | 6.973A | 2.18A | 839.576 | 89.698% | 948 | 28.0 | 43.27°C | 0.986 |
| 12.148V | 5.016V | 3.314V | 5.045V | 936.004 | 50.35°C | 114.61V | ||||
| 80% | 72.525A | 7.979A | 7.975A | 2.284A | 959.569 | 88.854% | 1045 | 30.8 | 43.86°C | 0.989 |
| 12.157V | 5.013V | 3.311V | 5.036V | 1079.943 | 51.95°C | 114.56V | ||||
| 90% | 81.925A | 8.482A | 8.463A | 2.388A | 1079.36 | 87.921% | 1135 | 33.1 | 44.42°C | 0.991 |
| 12.168V | 5.01V | 3.308V | 5.026V | 1227.653 | 53.48°C | 114.51V | ||||
| 100% | 91.195A | 8.984A | 8.983A | 2.997A | 1199.389 | 86.893% | 2251 | 49.1 | 45.08°C | 0.992 |
| 12.168V | 5.009V | 3.306V | 5.006V | 1380.306 | 55.18°C | 114.46V | ||||
| 110% | 100.397A | 9.987A | 10.081A | 3.001A | 1320.006 | 85.758% | 2248 | 49.1 | 46.75°C | 0.993 |
| 12.169V | 5.006V | 3.303V | 4.998V | 1539.227 | 57.69°C | 114.4V | ||||
| CL1 | 0.115A | 15.034A | 15A | 0A | 126.304 | 81.315% | 894 | 26.1 | 41.58°C | 0.965 |
| 12.193V | 5.008V | 3.307V | 5.128V | 155.327 | 47.09°C | 114.85V | ||||
| CL2 | 0.114A | 24.932A | 0A | 0A | 126.248 | 79.947% | 1088 | 31.9 | 40.35°C | 0.963 |
| 12.183V | 5.008V | 3.318V | 5.13V | 157.916 | 47.43°C | 114.86V | ||||
| CL3 | 0.114A | 0A | 24.948A | 0A | 83.903 | 73.285% | 1087 | 31.9 | 40.44°C | 0.959 |
| 12.178V | 5.017V | 3.307V | 5.13V | 114.492 | 49.45°C | 114.87V | ||||
| CL4 | 98.756A | 0A | 0A | 0A | 1199.958 | 87.563% | 1222 | 35.4 | 45.41°C | 0.991 |
| 12.150V | 5.024V | 3.322V | 5.074V | 1370.406 | 56.38°C | 114.47V |
Load regulation is within 1% on all primary rails, so all is good here.
| Test | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
| 20W | 1.229A | 0.496A | 0.495A | 0.195A | 20 | 74.953% | 0 | |6.0 | 39.72°C | 0.868 |
| 12.082V | 5.038V | 3.333V | 5.136V | 26.68 | 36.67°C | 114.9V | ||||
| 40W | 2.708A | 0.695A | 0.693A | 0.292A | 39.999 | 80.899% | 0 | |6.0 | 40.94°C | 0.924 |
| 12.075V | 5.036V | 3.332V | 5.132V | 49.44 | 37.67°C | 114.9V | ||||
| 60W | 4.186A | 0.894A | 0.891A | 0.39A | 59.998 | 83.463% | 0 | |6.0 | 41.93°C | 0.938 |
| 12.069V | 5.035V | 3.331V | 5.129V | 71.884 | 38.16°C | 114.89V | ||||
| 80W | 5.620A | 1.092A | 1.09A | 0.488A | 79.945 | 82.148% | 0 | |6.0 | 43.79°C | 0.947 |
| 12.156V | 5.034V | 3.331V | 5.126V | 97.324 | 39.81°C | 114.88V |
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, thereby reducing noise and potential interference in sensitive electronics, thereby improving performance and extending the lifespan of components. High ripple can cause instability, overheating, or damage to connected devices.
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
| 10% Load | 15.4 mV | 14.0 mV | 18.7 mV | 18.7 mV | Pass |
| 20% Load | 20.6 mV | 13.7 mV | 17.7 mV | 17.8 mV | Pass |
| 30% Load | 19.5 mV | 14.1 mV | 16.9 mV | 28.2 mV | Pass |
| 40% Load | 17.3 mV | 14.4 mV | 16.7 mV | 26.3 mV | Pass |
| 50% Load | 18.8 mV | 14.9 mV | 16.5 mV | 27.5 mV | Pass |
| 60% Load | 16.8 mV | 14.4 mV | 16.9 mV | 26.6 mV | Pass |
| 70% Load | 18.9 mV | 16.0 mV | 18.0 mV | 27.9 mV | Pass |
| 80% Load | 17.2 mV | 16.9 mV | 18.8 mV | 28.3 mV | Pass |
| 90% Load | 17.1 mV | 18.2 mV | 21.2 mV | 29.1 mV | Pass |
| 100% Load | 25.9 mV | 20.5 mV | 24.1 mV | 31.9 mV | Pass |
| 110% Load | 25.1 mV | 21.4 mV | 25.3 mV | 31.8 mV | Pass |
| Crossload 1 | 15.1 mV | 16.0 mV | 22.2 mV | 32.2 mV | Pass |
| Crossload 2 | 16.9 mV | 23.0 mV | 22.8 mV | 28.2 mV | Pass |
| Crossload 3 | 16.0 mV | 17.1 mV | 25.9 mV | 29.1 mV | Pass |
| Crossload 4 | 25.8 mV | 20.4 mV | 24.2 mV | 35.1 mV | Pass |
Ripple suppression is good at 12V and 5V and decent at 3.3V. It could be a bit better at 5VSB, but it doesn’t matter much as long as it is below the corresponding limit. I remember back in the day when Seasonic platforms used to be among the best in ripple suppression, but the competition has grown way stronger now.
