Transient Response
20% Load – 20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.071V | 11.991V | 0.66% | Pass |
| 5V | 5.044V | 4.952V | 1.83% | Pass |
| 3.3V | 3.315V | 3.156V | 4.79% | Pass |
| 5VSB | 5.133V | 5.084V | 0.95% | Pass |
50% Load -20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.060V | 12.001V | 0.49% | Pass |
| 5V | 5.039V | 4.942V | 1.93% | Pass |
| 3.3V | 3.311V | 3.145V | 5.01% | Pass |
| 5VSB | 5.137V | 5.087V | 0.97% | Pass |
The transient response in everyday scenarios is good at 12V, average at 5V, mediocre at 3.3V, and very good at 5VSB.
Transient Response ATX v3.0 Tests
The PSU successfully passed all ATX v3.0 transient response tests.
The PX-1600 has the lowest deviation and the highest 12V rail in the 200% load transient test, which is the toughest.
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Based on your suggestions bought the PX-1600. Amazing quality and cables are braided. Saved around 130 USD compared to the TX version.
I am using on a 220v socket so efficiency must be even better.
Ok, thanks for replying crmaris. I’ve had good experience with Seasonic so far & their Prime range so I’ll stick with them, thanks again for your time & in-depth reviews.
Hi crmaris, thanks for your reviews on the TX & this PX, awesome job.
Are these cons significant enough to deter someone like yourself from buying one?
Have you tested/reviewed a better high end alternative or more simply, which PSU in the 1300W+ category would be your go to right now?
Hi! So far there isn’t any better choice in the ATX v3.0 and >1500W capacity. I haven’t tested something better. The Corsair AX1600i has higher overall performance but it isn’t ATX v3.0 compatible
Very extensive review. I have the old Prime PX-1300 that has the 12v sense defect. I disconnected the wire and the PSU hasn’t turned off abnormally since when overclocking my 7900 XTX. My next PSU will definitely be ATX 3.0-compatible but I don’t think I need a new one, especially considering the limited choices now. I hope Corsair will update the AX1600i soon but I bet it will cost an arm and a leg.