Transient Response
20% Load – 20ms
| Advanced Transient Response 20% - 50 Hz - No Caps | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.065V | 11.944V | 1.00% | Pass |
| 5V | 5.013V | 4.901V | 2.24% | Pass |
| 3.3V | 3.353V | 3.170V | 5.45% | Pass |
| 5VSB | 4.999V | 4.916V | 1.66% | Pass |
50% Load -20ms
| Advanced Transient Response 50% - 50 Hz - No Caps | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.058V | 11.938V | 1.00% | Pass |
| 5V | 5.008V | 4.893V | 2.30% | Pass |
| 3.3V | 3.350V | 3.157V | 5.78% | Pass |
| 5VSB | 4.909V | 4.823V | 1.76% | Pass |
The transient response is decent at 12V and mediocre on the other rails, especially the 3.3V one.
Transient Response ATX v3.1 Tests
The PSU passes all ATX v3.1 transient response tests, but the 12V rail drops low.
The 12V rail doesn’t perform well, dropping low on all tests.
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Is it just me or could the PSU have performed significantly better in ripple suppression and transient response if they hadn’t gone with such an extremely low amount of secondary caps on the secondary side?
I count 27 caps or which many are fairly small. Other manufacturers like Seasonic are liable to use over 50 caps in that power class.
Yes the form factor is small but they definitely had space for more caps on the breakout board. They cheaped out, which is a pity.
Aris would you review Antec SF850X & Gamemax GX-1050 PRO ?
if they send them to me sure 🙂
UPMOST? XD
It’s nice to see that there is so much optimism and imagination around.
This should lead to improvement.