Transient Response
20% Load – 20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.106V | 11.970V | 1.12% | Pass |
| 5V | 5.021V | 4.869V | 3.03% | Pass |
| 3.3V | 3.309V | 3.165V | 4.36% | Pass |
| 5VSB | 5.053V | 5.009V | 0.86% | Pass |
50% Load -20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.101V | 11.989V | 0.92% | Pass |
| 5V | 5.003V | 4.868V | 2.70% | Pass |
| 3.3V | 3.289V | 3.139V | 4.55% | Pass |
| 5VSB | 5.017V | 4.975V | 0.84% | Pass |
The transient response is good at 12V but needs improvement on the minor rails, especially at 3.3V, where voltage drops dead low. ATX spec mentions 3.14V as the minimum on this rail, but the actual 5% percent is 3.135V with a 3.3V nominal voltage, so I mark the result as a pass. Still, it is a borderline pass.
Transient Response ATX v3.x Tests
The PSU passes all ATX v3.0 transient response tests.
The 12V rail performs well in these tests, dropping to 11.61V at the 200% load test.
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