Transient Response
20% Load – 20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.161V | 11.957V | 1.68% | Pass |
| 5V | 5.031V | 4.938V | 1.85% | Pass |
| 3.3V | 3.288V | 3.168V | 3.65% | Pass |
| 5VSB | 5.020V | 4.959V | 1.21% | Pass |
50% Load -20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.108V | 12.012V | 0.79% | Pass |
| 5V | 5.027V | 4.946V | 1.60% | Pass |
| 3.3V | 3.280V | 3.158V | 3.71% | Pass |
| 5VSB | 5.076V | 5.033V | 0.85% | Pass |
The transient response at 12V is good enough. The 5V has low voltage drops, but at 3.3V, the voltage drops below 3.2V, which is not good.
Transient Response ATX v3.0 Tests
The PSU successfully passed all ATX v3.0 transient response tests.
The 12V rail passes all tests, but in the 200% transient test, the voltage level on this rail should be a bit higher.
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Did you notice any coil whine with this PSU? I bought a Corsair Rm850x and it has a slight steam whistle type noise even while idle.
coil whine is super weird, it depends on your hardware configuration
Oops I meant the Rm850e.
Is coil whine generally common amongst most PSUs? I noticed that the capacitors on the Rm850e are non-japanese, could that be a contributing factor?
Thank you
in general for me, since I have lots of test systems, coil whine has to do mostly with the graphics card in use and the current use (e.g. game menu or desktop)