Lian Li, known for its high-quality PC parts, has announced the new RB Series power supplies. These PSUs come in 550 W, 650 W, and 750 W models and carry the 80 Plus Bronze certification, ensuring up to 85% efficiency. They are made to provide both strong power and tidy cable management, making PC builds cleaner and easier.

One of the main highlights is the built-in cable management system. It includes a groove inside the power supply housing and Velcro straps on the sides, helping users neatly hold extra cables in place. This reduces cable mess, improves airflow, and gives a neat look to the system. The semi-modular design also allows users to connect only the cables they need, such as SATA or peripheral cables, keeping the build organised and simple.

The RB Series supports the latest standards, including full compliance with Intel’s ATX 3.1 design. Both the 650 W and 750 W models include a PCIe Gen 5.1 12V-2×6 connector that can deliver up to 450 W for next-generation graphics cards. The 750 W version also includes a 12V-2×6 to PCIe 6+2-pin cable, perfect for systems that use high-end GPUs, including those with multiple connectors. With a strong single +12V rail and a DC-to-DC design, the power delivery remains stable and clean under heavy load.

Cooling performance is handled by a quiet 135 mm fluid dynamic bearing (FDB) fan, which keeps noise low while maintaining proper airflow. Depending on the model, the fan noise stays between 33.2 and 40.1 dBA. Each PSU can handle full-load operation in temperatures up to 40°C. Built-in protection systems like over-power, over-voltage, short-circuit, and over-temperature safeguards ensure safety and long life.

Lian Li RB Series PSUs pricing and availability

The Lian Li RB Series PSUs are available in black and will go on sale starting October 17th, 2025. Prices are set at $49.99 for the 550 W model, $59.99 for the 650 W model, and $69.99 for the 750 W model.