Load Testing
Test 1 (73.54W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 2.3A | 12.34V | 9.4mV |
| 5V | 5.01A | 5.01V | 7.4mV |
| 3.3V | 4.88A | 3.32V | 5.8mV |
| -12V | 0.1A | -12.11V | 9.2mV |
| 5Vsb | 0.5A | 5.12V | 6.6mV |
| AC Power | 89.4W | ||
| Efficiency | 82.25% | ||
| Power Factor | 0.87 | ||
| Intake Temp | 20°C | ||
| Exhaust Temp | 21°C | ||
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Test 2 (122.14W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 4.7A | 12.28V | 10.2mV |
| 5V | 5.0A | 5.0V | 8.4mV |
| 3.3V | 10.0A | 3.3V | 7.2mV |
| -12V | 0.1A | -12.13V | 10.0mV |
| 5Vsb | 1.02A | 5.01V | 7.6mV |
| AC Power | 144.3 | ||
| Efficiency | 84.65% | ||
| Power Factor | 0.93 | ||
| Intake Temp | 21°C | ||
| Exhaust Temp | 22°C | ||
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Test 3 (204.78W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 9.5A | 12.27V | 11.8mV |
| 5V | 9.92A | 4.96V | 9.4mV |
| 3.3V | 9.94A | 3.28V | 8.4mV |
| -12V | 0.1A | -12.26V | 12.0mV |
| 5Vsb | 1.02A | 5.08V | 7.6mV |
| AC Power | 236.6W | ||
| Efficiency | 86.55% | ||
| Power Factor | 0.95 | ||
| Intake Temp | 22°C | ||
| Exhaust Temp | 23°C | ||
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Test 4 (259.5W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 14.0A | 12.25V | 18.2mV |
| 5V | 9.92A | 4.96V | 9.8mV |
| 3.3V | 9.91A | 3.27V | 9.0mV |
| -12V | 0.1A | -12.28V | 13.4mV |
| 5Vsb | 1.01A | 5.07V | 7.6mV |
| AC Power | 298.9W | ||
| Efficiency | 86.82% | ||
| Power Factor | 0.97 | ||
| Intake Temp | 22°C | ||
| Exhaust Temp | 24°C | ||
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Test 5 (308.71W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 18.3A | 12.06V | 21.8mV |
| 5V | 9.94A | 4.97V | 10.2mV |
| 3.3V | 9.88A | 3.26V | 9.2mV |
| -12V | 0.1A | -12.31V | 15.2mV |
| 5Vsb | 1.01A | 5.07V | 7.8mV |
| AC Power | 358.0W | ||
| Efficiency | 86.23% | ||
| Power Factor | 0.97 | ||
| Intake Temp | 23°C | ||
| Exhaust Temp | 25°C | ||
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Test 6 (363.19W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 22.9A | 12.0V | 24.6mV |
| 5V | 9.96A | 4.98V | 11.2mV |
| 3.3V | 9.91A | 3.27V | 10.2mV |
| -12V | 0.1A | -12.32V | 17.2mV |
| 5Vsb | 1.01A | 5.06V | 9.0mV |
| AC Power | 427.0W | ||
| Efficiency | 85.06% | ||
| Power Factor | 0.97 | ||
| Intake Temp | 24°C | ||
| Exhaust Temp | 27°C | ||
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Test 7 (419.81W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 27.7A | 11.95V | 30.6mV |
| 5V | 10.0A | 5.0V | 12.8mV |
| 3.3V | 9.91A | 3.27V | 12.4mV |
| -12V | 0.1A | 12.34V | 21.4mV |
| 5Vsb | 1.01A | 5.06V | 11.8mV |
| AC Power | 495.2W | ||
| Efficiency | 84.78% | ||
| Power Factor | 0.97 | ||
| Intake Temp | 25°C | ||
| Exhaust Temp | 28°C | ||
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Overload Test (511.17W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 34.5A | 11.88V | 35.2mV |
| 5V | 10.02A | 5.01V | 17.2mV |
| 3.3V | 9.88A | 3.26V | 13.8mV |
| -12V | 0.3A | -12.21V | 26.8mV |
| 5Vsb | 3.0A | 5.03V | 15.2mV |
| AC Power | 613.5W | ||
| Efficiency | 83.32% | ||
| Power Factor | 0.97 | ||
| Intake Temp | 27°C | ||
| Exhaust Temp | 30°C | ||
.
The 12V rail started out at 12.34V in Test 1 and dropped to 11.95V at full load. This equates to a 0.34V (2.8%) regulation, and a drop of 0.39V, or 3.25%. The 5V rail varied between 4.96V and 5.01V, giving us 0.04V (0.8%) regulation and a 0.05V, or 1% variation. the 3.3V rail started at 3.32 and dropped to 3.27V at full load, giving us 0.03V (0.9%) regulation and a 0.05V (1.5%) drop. That’s a great result on the 5V and 3.3V rails, but there is room for improvement on the 12V rail. It would be nice if it too could manage a drop of less than 2%.
The efficiency was excellent, peaking at nearly 87%. I was able to overload the power supply to just over 510W. If I attempted to load it any higher, the ripple on the 12V and 5V rails would go through the roof, indicating that the unit had stopped working correctly. If I attempted to go higher again, the unit would shut down. While it is good to see the OPP doing its job, it would be preferable to set it somewhat lower, so that it would trip before the ripple increase. That’s a minor issue, though, since we are asking the power supply to do something the manufacturer never claimed it could.
| Rail | Test (419.81W) | Overload Test (511.17W) |
| 12V |  |
 |
| 5V |  |
 |
| 3.3V |  |
 |
| -12V |  |
 |
| 5Vsb |  |
 |
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The ripple was very well suppressed with the power supply loaded to under 500W, staying well below half the maximum allowed at all times. In fact, for the most part, it was below a quarter of the maximum.
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