Super Flower Leadex III 1000W ATX 3.1 PSU: features, specs and who it suits

The Super Flower Leadex III (model SF-1000F14GE) is a 1000-watt ATX power supply built to the ATX 3.1 standard. It is fully modular and includes a 16-pin PCIe Gen 5 cable, which makes it relevant for builders planning to run one of the newer graphics cards that use that connector.

What ATX 3.1 and PCIe Gen 5 mean

ATX 3.1 is Intel's updated power supply specification. Super Flower says this unit supports up to 200% power excursion, meaning it is designed to cope with brief spikes in demand that modern graphics cards can create. It lists a 16-pin 12V-2x6 cable for PCIe Gen 5 cards, with dual 8-pin sockets on the modular panel feeding a 12+4 pin plug on the graphics card side. The brand says the layout is meant to avoid problems with sharp cable bends near the connector.

Efficiency certifications

Two certifications appear on the listing. The 80 PLUS Gold certification gives efficiency of 87%, 90% and 87% at 20%, 50% and 100% of rated load. The Cybenetics Platinum level lists overall efficiency of 89% to under 91% on 115V input and 91% to under 93% on 230V input. Both are third-party testing schemes, and in general higher efficiency means less wasted heat and lower running losses.

Voltage stability

Super Flower lists voltage regulation of plus or minus 1% on the 12V, 5V and 3.3V rails, along with low ripple and improved transient response. Tight regulation matters because processors and graphics cards expect steady power, particularly when load changes quickly.

Fan and cooling

The 140mm fan uses a fluid dynamic bearing with a copper shaft around the bearing, which Super Flower says adds stability, durability and better heat dissipation. The 7-blade design is meant to move air while keeping noise down. The unit has an ECO semi-fanless mode, so the fan typically stays off or runs slowly at light loads.

Cables and protections

All cables are ultra-flexible ribbon types, which are generally easier to route in a tidy build. The listing mentions over-voltage, over-current, over-power, short-circuit, under-voltage and over-temperature protection, plus surge and inrush protection, and Japanese main capacitors. The input range is 100V to 240V with active PFC.

Size

It measures about 5.9 x 5.9 x 3.4 inches (roughly 150 x 150 x 86 mm) and weighs 4.1 lb (around 1.9 kg). Super Flower provides a 10-year warranty.

Who it suits

It suits builders of high-end gaming or workstation PCs who want 1000W, a native 16-pin graphics cable and a power supply that follows the current Intel standard.

What to check before you buy

• Your graphics card's connector and recommended wattage.
• That your case fits a standard ATX unit of this depth, plus cable bend room.
• The number of connectors in the box against your drives and motherboard.
• The warranty terms for your region.
• Follow the manual and fit the connector fully into its socket.

The short version

• 1000W fully modular ATX 3.1 power supply.
• Includes a 16-pin PCIe Gen 5 (12V-2x6) cable.
• 80 PLUS Gold and Cybenetics Platinum certifications.
• 140mm FDB fan with copper shaft and semi-fanless ECO mode.
• 10-year warranty.

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