Transient Response
20% Load – 20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.186V | 12.064V | 0.99% | Pass |
| 5V | 5.082V | 4.934V | 2.92% | Pass |
| 3.3V | 3.338V | 3.207V | 3.93% | Pass |
| 5VSB | 5.070V | 5.033V | 0.72% | Pass |
50% Load -20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.172V | 12.068V | 0.86% | Pass |
| 5V | 5.071V | 4.924V | 2.90% | Pass |
| 3.3V | 3.324V | 3.189V | 4.07% | Pass |
| 5VSB | 5.007V | 4.937V | 1.40% | Pass |
The transient response is good at 12V, where it matters the most since this rail handles most PC parts. I would like to see the 3.3V rail keep its voltage level above 3.2V in the second test.
Transient Response ATX v3.1 Tests
The PSU passes all ATX v3.1 transient response tests. The 3.3V rail is dead low, though, at the limit.
The 12V rail’s level is high in the 200% load test compared to other similar spec PSUs. Helly did a good job on this platform.
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