Super Flower Leadex III 1300W 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 12.102V 11.999V 0.85% Pass
5V 5.039V 4.917V 2.43% Pass
3.3V 3.334V 3.179V 4.65% Pass
5VSB 5.076V 5.038V 0.74% Pass

50% Load -20ms

Advanced Transient Response 50% - 50 Hz - No Caps
Voltage Before After Change Pass/Fail
12V 12.083V 11.978V 0.86% Pass
5V 5.040V 4.912V 2.54% Pass
3.3V 3.336V 3.174V 4.87% Pass
5VSB 5.039V 4.999V 0.79% Pass

The transient response is good at 12V but needs improvement on the minor rails, especially at 3.3V.

Transient Response ATX v3.1 Tests

The PSU passes all ATX v3.1 transient response tests, but the 12V and 3.3V rails drop low in the 200% and 180% tests.

The 12V rail doesn’t perform well, finishing last in the 200% test and second worst in the 180% and 160% tests.

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13 thoughts on “Super Flower Leadex III 1300W ATX v3.1 PSU Review

  1. Should I buy Super Flower Leadex III 1300W ATX v3.1 or Cooler Master MWE gold v2 1250w to be on safe site about 2vsb rail?

      1. thank you for replying! what about NZXT c1000 atx3.1 or Corsair RM1000e? NZXT c1000 atx3.1 is just few dollars more at my country

    1. I got this PSU but I think mine is dead. Tried doing a BIOS flashback with just the motherboard and cpu power plugged in and nothing happened (yes the psu was switched on). I then did the paperclip test and the fan didnt spin but im not sure if it normally spins at startup. Does anyone know? I tried both with ECO on and ECO off.

  2. Thanks for your review. Any thoughts on what you’d pick between the 1000W version of this and the new (ATX 3.1) RM1000x that you reviewed in September?

    1. I am also looking at the Leadex VII XP Platinum that you recommend in your guide. But I think this review is the first time anyone has looked at one of the new ATX 3.1 Leadex III models.

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