LIAN LI launches the RB Series PSU with advanced cable management, available in 550W, 650W, and 750W models with 80 PLUS Bronze certification for up to 85% efficiency.
LIAN LI launches the RB Series PSU with advanced cable management, available in 550W, 650W, and 750W models with 80 PLUS Bronze certification for up to 85% efficiency.
Press Release
LIAN LI launches the RB Series PSU, available in 550W, 650W, and 750W models with 80 PLUS Bronze certification for up to 85% efficiency. Designed to deliver clean power and cleaner builds, the LIAN LI RB Series features an integrated cable management system with a built-in groove and Velcro straps to secure excess cables, paired with a semi-modular layout that lets users connect SATA and peripheral cables only when needed.
Fully compliant with Intel’s ATX 3.1 specification, the 650W and 750W units also include a native PCIe Gen 5.1 12V-2×6 connector (up to 450W) for next-gen GPU support. With a high amperage single +12V rail and a DC-to-DC conversion design for enhanced voltage stability and power quality, the LIAN LI RB Series is engineered for reliable performance. Cooling is handled by a quiet 135mm FDB fan, ensuring efficient airflow while keeping noise levels in check.
Advanced Cable Management
Advanced Cable Management with Semi-Modular Flexibility
The LIAN LI RB Series stands out in the Bronze category with a unique cable management system built directly into the PSU housing. The integrated cable groove on one side and Velcro straps on three sides of the PSU allow users to secure excess cables neatly along the sides, reducing clutter and improving airflow. Along with this is a semi-modular design, where only the essential power cables are fixed. Users can connect SATA and peripheral cables as needed. This setup makes the build process easier while giving the flexibility to create a clean, efficient system without extra wiring.
Modern Power Delivery for Next-Gen Hardware
Fully compliant with the Intel ATX 3.1 standard, the LIAN LI RB Series ensures compatibility with today’s and tomorrow’s systems. The 650W and 750W models feature a native PCIe Gen 5.1 12V-2×6 (12+4-pin) connector, capable of delivering up to 450W. Additionally, the 750W PSU model includes an extra 12V-2×6 to PCIe 6+2-pin cable, providing reliable support for multiple devices beyond just GPUs. This cable is also well-suited for powering high-end AMD graphics cards, which need three PCIe 6+2-pin. Inside, a high-amperage single +12V rail supplies steady power for demanding components, while a DC-to-DC conversion design enhances voltage regulation, power efficiency, and noise reduction. These features work together to ensure reliable performance and clean power under various load conditions.
Quiet Cooling and Certified Efficiency
To keep noise levels low without sacrificing thermal performance, the LIAN LI RB Series features a 135mm fluid dynamic bearing (FDB) fan. Operating at just 33.2 dBA to 40.1 dBA, depending on the model, the fan delivers quiet performance even under full load. Each unit is 80 PLUS® Bronze certified for up to 85% efficiency, reducing wasted power and heat output. With support for continuous full-load operation at ambient temperatures up to 40°C, along with built-in protections (OPP, OVP, SCP, OCP, UVP, and OTP), the LIAN LI RB Series offers both reliable performance and peace of mind.
Availability and Pricing
The LIAN LI RB Series PSUs are available in black only starting October 17th, 2025. The LIAN LI RB Series power supplies are priced at $49.99/£45.95 for the 550W, $59.99/£54.95 for the 650W, and $69.99/£64.96 for the 750W models. The LIAN LI RB Series are coming to Overclockers UK (2:00 PM BST), available for pre-order in the United States via Amazon.
