be quiet! Power Zone 2 1000W ATX v3.1 PSU Review

Transient Response

20% Load – 20ms

Advanced Transient Response 20% - 50 Hz - No Caps
Voltage Before After Change Pass/Fail
12V 12.291V 12.177V 0.93% Pass
5V 5.092V 5.006V 1.69% Pass
3.3V 3.331V 3.219V 3.37% Pass
5VSB 5.018V 4.967V 1.03% Pass

50% Load -20ms

Advanced Transient Response 50% - 50 Hz - No Caps
Voltage Before After Change Pass/Fail
12V 12.262V 12.147V 0.93% Pass
5V 5.077V 4.992V 1.67% Pass
3.3V 3.315V 3.197V 3.55% Pass
5VSB 4.980V 4.929V 1.02% Pass

The transient response is good enough at 12V and decent on the minor rails.

Transient Response ATX v3.1 Tests

The PSU passes all ATX v3.1 transient response tests, but the 3.3V rail drops lower than 3.2V in some tests.

The 12V rail performs well in these tests.

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