Load Testing
Test 1 (73.59W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 2.2A | 12.16V | 8.6mV |
| 5V | 5.05A | 5.05V | 5.2mV |
| 3.3V | 4.93A | 3.35V | 3.2mV |
| -12V | 0.1A | -11.48V | 6.6mV |
| 5Vsb | 0.5A | 5.02V | 5.0mV |
| AC Power | 84.3W | ||
| Efficiency | 85.86% | ||
| Power Factor | 0.93 | ||
| Intake Temp | 27°C | ||
| Exhaust Temp | 28°C | ||
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Test 2 (160.3W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 9.2A | 12.16V | 11.0mV |
| 5V | 5.06A | 5.05V | 5.2mV |
| 3.3V | 4.93A | 3.35V | 3.0mV |
| -12V | 0.1A | -11.64V | 6.8mV |
| 5Vsb | 1.0A | 5.01V | 6.4mV |
| AC Power | 180.2W | ||
| Efficiency | 88.81% | ||
| Power Factor | 0.96 | ||
| Intake Temp | 28°C | ||
| Exhaust Temp | 30°C | ||
Test 3 (202.24W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 9.2A | 12.14V | 12.6mV |
| 5V | 10.06A | 5.03V | 5.8mV |
| 3.3V | 10.12A | 3.34V | 3.8mV |
| -12V | 0.1A | -11.73V | 6.6mV |
| 5Vsb | 1.0A | 5.0V | 7.0mV |
| AC Power | 220.6W | ||
| Efficiency | 91.68% | ||
| Power Factor | 0.96 | ||
| Intake Temp | 28°C | ||
| Exhaust Temp | 30°C | ||
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Test 4 (257.81W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 13.8A | 12.12V | 15.4mV |
| 5V | 10.06A | 5.03V | 5.8mV |
| 3.3V | 10.12A | 3.34V | 4.0mV |
| -12V | 0.1A | -11.86V | 8.2mV |
| 5Vsb | 1.0A | 4.99V | 8.2mV |
| AC Power | 283.1W | ||
| Efficiency | 91.07% | ||
| Power Factor | 0.98 | ||
| Intake Temp | 28°C | ||
| Exhaust Temp | 31°C | ||
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Test 5 (313.2W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 18.4A | 12.11V | 18.0mV |
| 5V | 10.06A | 5.03V | 6.2mV |
| 3.3V | 10.09A | 3.33V | 4.2mV |
| -12V | 0.1A | -11.98V | 8.8mV |
| 5Vsb | 1.0A | 4.99V | 9.4mV |
| AC Power | 344.4W | ||
| Efficiency | 90.94% | ||
| Power Factor | 0.98 | ||
| Intake Temp | 30°C | ||
| Exhaust Temp | 33°C | ||
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Test 6 (371.13W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 23.2A | 12.1V | 19.4mV |
| 5V | 10.06A | 5.03V | 6.2mV |
| 3.3V | 10.09A | 3.33V | 4.2mV |
| -12V | 0.1A | 12.11V | 10.4mV |
| 5Vsb | 1.0A | 4.99V | 9.6mV |
| AC Power | 408.5W | ||
| Efficiency | 90.85% | ||
| Power Factor | 0.97 | ||
| Intake Temp | 30°C | ||
| Exhaust Temp | 33°C | ||
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Test 7 (403.35W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 25.4A | 12.09V | 21.4mV |
| 5V | 10.04A | 5.02V | 7.2mV |
| 3.3V | 10.09A | 3.33V | 5.0mV |
| -12V | 0.2A | -11.96V | 14.8mV |
| 5Vsb | 1.99A | 4.97V | 12.2mV |
| AC Power | 446.2W | ||
| Efficiency | 90.40% | ||
| Power Factor | 0.98 | ||
| Intake Temp | 31°C | ||
| Exhaust Temp | 33°C | ||
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Test 8 (461.29W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 29.9A | 12.09V | 26.4mV |
| 5V | 10.04A | 5.02V | 9.8mV |
| 3.3V | 10.09A | 3.33V | 10.0mV |
| -12V | 0.3A | -11.9V | 19.6mV |
| 5Vsb | 2.48A | 4.95V | 13.2mV |
| AC Power | 513.7W | ||
| Efficiency | 89.80% | ||
| Power Factor | 0.99 | ||
| Intake Temp | 32°C | ||
| Exhaust Temp | 35°C | ||
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Overload Test (543.69W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 36.8A | 12.07V | 30.2mV |
| 5V | 10.02A | 5.01V | 12.0mV |
| 3.3V | 10.06A | 3.32V | 11.0mV |
| -12V | 0.3A | -12.1V | 48.2mV |
| 5Vsb | 2.48A | 4.95V | 15.4mV |
| AC Power | 609.5W | ||
| Efficiency | 89.20% | ||
| Power Factor | 0.99 | ||
| Intake Temp | 32°C | ||
| Exhaust Temp | 37°C | ||
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The 12V rail started at 12.16V, and dropped to 12.09V at full load. This equates to 0.16V, or 1.33% regulation, and a 0.07V, or 0.58% drop. On the 5V, we had 5.05V during Test 1 and 5.02V as full load, which equates to 1% regulation and a 0.6% drop. Last but not least, we had 3.35V on the 3.3V rail during Test 1 and 3.33V at full load. This works out to be 1.5% regulation and a 0.6% drop. Averaged out, we have 1.28% regulation, and 0.59% variation. This is an excellent result – one of the best we have ever seen here.
The efficiency was also good, although the In Win IP-S400GQ3-2 was actually better in this respect under light loads, starting at almost 91% at 74W Load, vs just under 86% for the G-450. However, this is a lower load than the 80plus certification requires testing at, and it jumped up very quickly during the next tests. At higher loads, this power supply is actually more efficient than the In Win.
The unit ran fairly cool during the testing, and we only saw a 3°C Delta between the intake and exhaust temperature at most. I was able to overload the unit to just over 540W. The drops in voltages were only small during this test, the efficiency was still above 89% and the unit’s exhaust temperature only went up by 2°, which indicates that the unit wasn’t having too much difficulty handling it.
| Rail | Test 8 (461.29W) | Overload Test (543.69W) |
| 12V |  |
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| 5V |  |
 |
| 3.3V |  |
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| -12V |  |
 |
| 5Vsb |  |
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The ripple suppression was also excellent. Until the overload test, none of the rails even went above a quarter of the maximum allowable limits, and the 5V and 3.3V rails had single digit ripple figures for the most part. This is a lot better than we saw with the SSP-350GT.
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