Transient Response
20% Load – 20ms
| Advanced Transient Response 20% - 50 Hz - No Caps | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.035V | 11.926V | 0.90% | Pass |
| 5V | 5.104V | 5.022V | 1.62% | Pass |
| 3.3V | 3.363V | 3.228V | 4.00% | Pass |
| 5VSB | 5.077V | 5.006V | 1.39% | Pass |
50% Load -20ms
| Advanced Transient Response 50% - 50 Hz - No Caps | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.015V | 11.930V | 0.71% | Pass |
| 5V | 5.090V | 5.010V | 1.57% | Pass |
| 3.3V | 3.349V | 3.211V | 4.12% | Pass |
| 5VSB | 5.047V | 5.003V | 0.88% | Pass |
The transient response is good on all rails.
Transient Response ATX v3.1 Tests
The PSU passes all ATX v3.1 transient response tests. Nonetheless, I would like to see higher voltage levels at 12V and 3.3V.
The 12V rail’s performance remains at the same level as the previous model; hence, it is not highly competitive. That said, the PSU achieves better performance than Corsair’s and MSI’s affordable options in this category.
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The PowerZone has relatively loud transformer noise, even in standby. You can hear it from the next room. Otherwise, it’s electrically quiet — no coil whine or other weird stuff — but the base hum is quite loud. What about this one?
Can you recommend a power supply that’s completely silent, even in standby? I’ve tested a few and ended up sticking with the PowerZone 2 because it’s a good all-rounder and gets a lot of things right. But that low hum or faint squeal drives me crazy. Every morning I wake up thinking, “Damn, I forgot to switch off the power strip again before going to bed