Load Testing
Test 1 (75.45W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 2.41A | 12.12V | 8.0mV |
| 5V | 5.09A | 5.09V | 10.4mV |
| 3.3V | 4.94A | 3.36V | 7.8mV |
| −12V | 0.1A | −11.78V | 13.2mV |
| 5Vsb | 0.51A | 5.07V | 7.8mV |
| AC Power | 86.7W | ||
| Efficiency | 87.02% | ||
| Power Factor | 0.91 | ||
| Intake Temp | 32°C | ||
| Exhaust Temp | 34°C | ||
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Test 2 (162.47W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 9.43A | 12.10V | 15.0mV |
| 5V | 5.08A | 5.08V | 11.2mV |
| 3.3V | 4.93A | 3.35V | 7.8mV |
| −12V | 0.1A | −11.85V | 30.4mV |
| 5Vsb | 1.01A | 5.04V | 12.4mV |
| AC Power | 180.73W | ||
| Efficiency | 89.90% | ||
| Power Factor | 0.93 | ||
| Intake Temp | 32°C | ||
| Exhaust Temp | 37°C | ||
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Test 3 (204.96W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 9.43A | 12.08V | 17.6mV |
| 5V | 10.12A | 5.06V | 11.4mV |
| 3.3V | 10.09A | 3.33V | 8.6mV |
| −12V | 0.1A | −11.9V | 39.0mV |
| 5Vsb | 1.01A | 5.03V | 12.8mV |
| AC Power | 226.6W | ||
| Efficiency | 90.45% | ||
| Power Factor | 0.94 | ||
| Intake Temp | 32°C | ||
| Exhaust Temp | 41°C | ||
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Test 4 (259.04W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 13.94A | 12.05V | 23.8mV |
| 5V | 10.12A | 5.06V | 11.6mV |
| 3.3V | 10.09A | 3.33V | 9.8mV |
| −12V | 0.1A | −11.95V | 51.2mV |
| 5Vsb | 1.01A | 5.03V | 12.4mV |
| AC Power | 287.05W | ||
| Efficiency | 90.24% | ||
| Power Factor | 0.94 | ||
| Intake Temp | 32°C | ||
| Exhaust Temp | 42°C | ||
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Test 5 (311.46W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 18.37A | 12.02V | 33.4mV |
| 5V | 10.1A | 5.05V | 12.2mV |
| 3.3V | 10.06A | 3.32V | 10.2mV |
| −12V | 0.1A | −12.01V | 64.4mV |
| 5Vsb | 1.0A | 5.02V | 12.6mV |
| AC Power | 347.32W | ||
| Efficiency | 89.76% | ||
| Power Factor | 0.95 | ||
| Intake Temp | 32°C | ||
| Exhaust Temp | 43°C | ||
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Test 6 (366.06W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 22.95A | 12.0V | 41.2mV |
| 5V | 10.1A | 5.05V | 12.8mV |
| 3.3V | 10.06A | 3.32V | 10.2mV |
| −12V | 0.1A | −12.06V | 76.8mV |
| 5Vsb | 1.0A | 5.02V | 13.2mV |
| AC Power | 410.18 | ||
| Efficiency | 89.24% | ||
| Power Factor | 0.95 | ||
| Intake Temp | 33°C | ||
| Exhaust Temp | 44°C | ||
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Test 7 (394.74W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 22.95A | 12.0V | 46.0mV |
| 5V | 10.1A | 5.05V | 13.4mV |
| 3.3V | 10.06A | 3.32V | 10.8mV |
| −12V | 0.1A | −12.08V | 82.0mV |
| 5Vsb | 1.0A | 5.02V | 13.4mV |
| AC Power | 443.28W | ||
| Efficiency | 89.05% | ||
| Power Factor | 0.95 | ||
| Intake Temp | 33°C | ||
| Exhaust Temp | 45°C | ||
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Test 8 (466.06W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 27.63A | 11.99V | 70.8mV |
| 5V | 15.09A | 5.03V | 15.4mV |
| 3.3V | 14.85A | 3.30V | 12.0mV |
| −12V | 0.2A | −11.96V | 109.4mV |
| 5Vsb | 1.5A | 4.99V | 14.0mV |
| AC Power | 532.5W | ||
| Efficiency | 87.52% | ||
| Power Factor | 0.96 | ||
| Intake Temp | 34°C | ||
| Exhaust Temp | 47°C | ||
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Test 9 (524.0W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 32.19A | 11.98V | 113.4mV |
| 5V | 15.09A | 5.03V | 16.2mV |
| 3.3V | 14.85A | 3.30V | 12.2mV |
| −12V | 0.3A | −11.88V | 146.2mV |
| 5Vsb | 1.99A | 4.98V | 15.2mV |
| AC Power | 606.92W | ||
| Efficiency | 86.34% | ||
| Power Factor | 0.96 | ||
| Intake Temp | 35°C | ||
| Exhaust Temp | 49°C | ||
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Test 10 (550.14W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 34.4A | 11.97V | 163.2mV |
| 5V | 15.09A | 5.03V | 17.2mV |
| 3.3V | 14.85A | 3.30V | 12.6mV |
| −12V | 0.3A | −11.89V | 194.0mV |
| 5Vsb | 1.99A | 4.98V | 15.4mV |
| AC Power | 645.71W | ||
| Efficiency | 85.20% | ||
| Power Factor | 0.96 | ||
| Intake Temp | 35°C | ||
| Exhaust Temp | 52°C | ||
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Unlike my last Aywun unit, this one did actually manage to hold 550W load with no shutdowns or fireworks. The 12V rail read 12.12V during Test 1 and had dropped to 11.97V at full load, which equates to 0.12V (1%) worst-case regulation and a drop of 0.15V (1.25%). The 5V rail started out at 5.09V and finished up at 5.03V, which equates to 0.09V, or 1.8% regulation and a 0.06V or 1.2% drop. Last but not least, the 3.3V rail was at 3.36V in test 1 and right on 3.3V at full load, which equates to 0.06V, or 1.82% on both fronts. This is a good voltage regulation result, especially for a lower cost unit.
Efficiency was decent at low loads, but at full load, the unit was just barely maintaining 80 PLUS Silver efficiency. Since this unit was tested on 230V, it would have been nice to see slightly higher results than this. That said, however, I won’t score against it. It was still above the required 85%, and my power meter isn’t as precise as what Ecova use. This power supply ran hot in comparison to some others. By the time we hit 200W Load, we already had a difference of 9°C between the intake and exhaust temperatures. At full load, the difference had risen to 17°. That makes this the hottest running power supply I have tested since I started measuring the temperatures.
| Rail | Test 9 (524.0W) | Test 10 (550.14W) |
| 12V |  |
 |
| 5V |  |
 |
| 3.3V |  |
 |
| −12V |  |
 |
| 5Vsb |  |
 |
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The ripple suppression is where this power supply really falls on its face (if an ATX power supply had a face). At full load, the 12V rail was reading 163.2mV – over 40mV above the maximum allowed in ATX specifications. For this reason, I opted not to overload this unit, since we already know what its maximum is. The −12V rail was even worse. At least it isn’t used on most modern PCs. The other rails all had excellent ripple suppression – with less than 20mV throughout the testing.
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