darkFlash UPMOST 1250W ATX v3.0 PSU Review

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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3 thoughts on “darkFlash UPMOST 1250W ATX v3.0 PSU Review

  1. UPMOST? XD
    It’s nice to see that there is so much optimism and imagination around.
    This should lead to improvement.

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