Super Flower Leadex III ATX 3.1 1000W Power Supply - Stable, PCIe Gen5

In this review the Super Flower Leadex III ATX 3.1 1000W is evaluated for high-end gaming rigs and workstations that need robust, modern power delivery. The bottom line: this PSU is aimed at builders who want a durable, efficient supply with ATX 3.1 and PCIe Gen 5 readiness, and its strongest reason to buy is tight voltage regulation and certified efficiency that keep sensitive GPUs and CPUs stable under heavy loads.

Key Features

• ATX 3.1 and PCIe Gen 5 ready: The unit supports ATX 3.1 standards and includes a 16-pin PCIe Gen 5 cable for compatibility with the latest GPUs and transient power excursions.
• High efficiency certifications: With 80 PLUS Gold efficiency and Cybenetics Platinum overall ratings, it delivers strong efficiency across 20%, 50% and 100% loads for lower waste heat and power draw.
• Tight voltage regulation: Voltage rails are held to tight tolerances (about 1%), which helps sensitive components run reliably under varying loads.
• Robust cooling and durability: The 140mm F.D.B fan with a copper shaft and seven-blade design provides stable airflow, quieter operation and improved bearing longevity.
• Full modular design: Full modular cabling and a modular panel with HCS terminals and dual 8-pin sockets allow cleaner builds and safer connections without high-angle bending.
• Protections and safety: Built to modern safety standards and featuring a patented buckle 20+4 pin connector, it aims to guard high-end systems from transient spikes.

Who It's For

The Leadex III 1000W is best for PC builders running high-power GPUs and overclocked CPUs who need a PSU that can handle power excursions and deliver consistent voltages. Its modular cabling and solid build quality suit custom cases and cable management-minded builders.

Users who primarily need a low-watt, budget or ultra-compact solution should look elsewhere; this is sized and specified for mid-tower to full-tower systems and power-hungry components rather than small form-factor or entry-level desktops.

Pros & Cons

Pros

• Excellent efficiency under realistic loads thanks to 80 PLUS Gold and Cybenetics Platinum ratings.
• Very stable voltage rails, which benefits sensitive hardware during heavy use.
• Quiet, durable cooling from the 140mm F.D.B fan with copper shaft and a design focused on airflow and low noise.
• Full modular layout and thoughtful connector design make cable routing and GPU hookups cleaner and safer.

Cons

• Some customers reported mixed experiences with included power cords on lower-watt variants, so power cable compatibility should be checked.

Specifications

Wattage	1000W
ATX Standard	ATX 3.1
Efficiency Certifications	80 PLUS Gold; Cybenetics Platinum overall
Fan	140mm F.D.B fan, copper shaft, 7-blade design
Modularity	Full modular
PCIe Connector	16-pin PCIe Gen 5 (12V-2x6) with 12+4 GPU side socket
Warranty	10 years

Our Verdict

The Leadex III ATX 3.1 1000W is a thoughtful choice for enthusiasts and professionals who need a high-capacity, future-proof supply with tight voltage control and strong efficiency. It pairs well with high-end GPUs and overclocked systems and represents good long-term value for builders who prioritize stability, modular cabling and quieter operation.

Frequently Asked Questions

Is this PSU compatible with PCIe Gen 5 GPUs?
The unit includes a 16-pin PCIe Gen 5 cable and a 12+4 socket design, so it is ready for Gen 5 GPU power requirements.

How quiet is the fan under load?
The 140mm F.D.B fan with copper shaft and seven-blade design is engineered for stable airflow and reduced noise, and customer feedback notes generally quiet operation under normal loads.

Does it come with a warranty?
Yes, the power supply includes a 10 year warranty for long-term coverage.