Super Flower Leadex III Gold 1300W Fully Modular ATX 3.1 PSU

Super Flower Leadex III Gold 1300W Fully Modular ATX 3.1 PSU

ATX 3.1 & PCIe 5.1 Ready: The Leadex III Gold ATX 3.1 series is engineered to be entirely future-proof. Fully compliant with Intel’s stringent ATX 3.1 specifications, it is designed to safely handle extreme transient power spikes up to 200% of its rated capacity. To ensure maximum safety and eliminate the risk of high-angle bending issues commonly associated with early 12VHPWR cables, Super Flower employs a highly secure dual 8-pin to 12+4 pin PCIe 16-pin cable design on the PSU side, delivering clean, native power delivery to next-gen graphics cards.

80 PLUS Gold Efficiency & Premium Build: This 1300W behemoth guarantees exceptional energy efficiency, carrying both the respected 80 PLUS Gold certification and the Cybenetics Gold rating. This means it operates at up to 90% efficiency under typical loads, reducing heat generation and lowering electricity costs. Inside, it utilizes a high-quality Japanese main capacitor that provides superior reliability, extended lifespan, and exceptionally low voltage ripple on the crucial +12V rail, ensuring your expensive components receive clean, stable power.

Silent Cooling with ECO Mode: Keeping the power supply ice-cold is a premium 140mm Fluid Dynamic Bearing (FDB) fan featuring a unique 7-blade design and a copper shaft for enhanced stability and longevity. Thanks to Super Flower’s intelligent Auto & ECO fan control design, the fan operates in a semi-fanless mode. Under light to moderate loads, the fan stops spinning entirely, resulting in a 0dB, perfectly silent desktop experience that only ramps up when you push your system to the limits in heavy gaming or rendering workloads.

Key Features

• 1300W Continuous Power: Unparalleled headroom to support overclocked processors and power-hungry flagship graphics cards.
• ATX 3.1 & PCIe 5.1 Compliant: Built to handle massive transient power spikes from next-generation GPUs safely.
• Safe 16-Pin Cable Design: Uses high-current HCS terminals and dual 8-pin sockets on the PSU panel connecting to a 12+4 pin GPU socket.
• ECO Fan Mode: The 140mm FDB fan stops completely under light loads for silent operation.
• Japanese Main Capacitor: Ensures maximum longevity, high-temperature resilience, and ultra-low ripple noise.
• Fully Modular Ribbon Cables: Ultra-flexible, flat black ribbon cables make routing and cable management effortless.

Specifications of Super Flower Leadex III Gold 1300W Fully Modular ATX 3.1 PSU

Who It’s For

• Extreme Enthusiasts & Overclockers: Builders running the most demanding setups, such as Intel Core i9 or AMD Ryzen 9 processors paired with an RTX 4090 or upcoming next-gen graphics cards.
• Workstation Users: Professionals doing heavy 3D rendering, video editing, or AI machine learning who require their system to run at maximum power for hours without failing.
• Silence Seekers: Users who require massive power overhead but want their system to remain completely silent during normal, everyday productivity tasks via the ECO mode.

Frequently Asked Questions

1. Why does the PSU side use dual 8-pin sockets for the 16-pin GPU cable? This is a deliberate safety design by Super Flower. Instead of using a fragile 12+4 pin connector on the PSU housing, they utilize two standard, robust 8-pin modular sockets that merge into the new 12+4 pin (12V-2×6) connector on the GPU side. This prevents terminal melting issues caused by extreme cable bending at the power supply side while still fully meeting ATX 3.1 power delivery standards for your graphics card.
2. Will this power supply fit in my mid-tower case? Yes. Despite its massive 1300W capacity, the Leadex III Gold is incredibly compact, measuring just 150mm in length. It will easily fit into virtually any standard ATX mid-tower case without interfering with hard drive cages or bottom-mounted fans.
3. Do I need an ATX 3.1 PSU if I have an older graphics card? No, but it offers excellent future-proofing. This power supply includes standard 6+2 pin PCIe cables for older graphics cards alongside the new 16-pin cable, so it will work perfectly with your current hardware and be ready whenever you decide to upgrade to a next-generation GPU.