Super Flower Leadex III 1300W ATX v3.1 PSU Review

Epilogue

The Super Flower Leadex III 1300W is offered at a very good price; it is powerful, can deliver up to 2600W of power with its rails remaining inside the ATX spec’s requirements, its ripple suppression and load regulation are good, and has high enough average efficiency. The significant downsides are the failure of the 5VSB rail during OCP evaluation, which I believe is an easy fix, the inefficient 5VSB rail, which reminds me of older PSU designs, the high inrush currents, the increased vampire power and the not-that-high PF readings at 230V. As you can see from the downsides list, most have to do with the 5VSB rail, so it is time for SF to use a better circuit in this PSU, allowing it to show its full potential.

Although the average noise output exceeds 30 dBA, compared to other similar-spec units, the Leadex III 1300W is not that noisy. Only the way more expensive Cooler Master X Silent Max Platinum and Seasonic Prime TX-1300 are far away, with the XPG Cybercore II 1300 Platinum being slightly below 30 dBA. You cannot have it all: compact dimensions, low price, and low noise output. I prefer any day of the week a normal-dimension PSU with a large PCB and fan to allow for good cooling at low speeds over a small one with increased noise output. Users needing a 1300W unit will most likely not install them in tiny chassis.

Before investing in a new power supply, read my Best ATX v3.x PSUs article to check all alternative PSU offerings. You help me a lot by using my affiliate links, which don’t increase the product’s price. I get a commission from Amazon every time you do it, which can make a difference for me, especially now that I am on my own, working exclusively for my media and not for someone else.