Cooler Master GX III 650W ATX v3.0 PSU Review

Transient Response

20% Load – 20ms

Voltage Before After Change Pass/Fail
12V 12.017V 11.763V 2.11% Pass
5V 5.034V 4.914V 2.39% Pass
3.3V 3.350V 3.218V 3.94% Pass
5VSB 5.067V 5.007V 1.18% Pass

50% Load -20ms

Voltage Before After Change Pass/Fail
12V 11.999V 11.742V 2.14% Pass
5V 5.005V 4.885V 2.39% Pass
3.3V 3.317V 3.178V 4.18% Pass
5VSB 5.012V 4.952V 1.19% Pass

The transient response is mediocre on the significant rails.

Transient Response ATX v3.0 Tests

The PSU passes all ATX v3.0 transient response tests.

The 12V rail’s level drops low in the 200% transient load test.

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