Super Flower Leadex VIII Platinum PRO 850W 125mm ATX 3.1 power supply

Smallest 850W ATX 3.1 PSU

The Super Flower Leadex VIII Platinum PRO delivers 850 W in a 125 mm deep ATX chassis, making it the shortest unit in its class. Full modular ribbon cables keep builds tidy while a 120 mm fluid-dynamic-bearing fan runs quietly. Cybenetics Platinum certification confirms high efficiency across the load range. It supports ATX 3.1 and PCIe 5.1 with a native 12V-2x6 connector.

Compact-case builders and silent rigs

This unit suits small-form-factor cases that cannot accept standard-length power supplies and users who value low noise under load. Builders needing more than 850 W or requiring multiple 12V-2x6 cables for multi-GPU setups should look at higher-wattage or larger models. Systems restricted to ATX 3.0-only motherboards will not gain the newer standard’s benefits.

125 mm depth decides fit

The 125 mm length is the single specification that determines whether this PSU fits your case. Measure the available clearance from the motherboard tray to the side panel or drive cage before ordering. If the space is shorter, this unit cannot be installed regardless of its other features.