Description

LIAN LI RB750B 750W 80 PLUS Bronze PCIe 5.1 ATX 3.1 Power Supply

Overview

The LIAN LI RB750B 750W Power Supply is designed for modern gaming PCs and high-performance desktop systems. It combines a 750W maximum power output with 80 PLUS Bronze efficiency, ATX 3.1 support, and modern GPU connectivity.

The RB750B features a compact 150mm ATX design for wide case compatibility. In addition, it includes a native 12V-2×6 connector to support compatible modern graphics cards. The power supply also uses a 135mm HYB temperature-controlled fan for effective cooling and stable operation.

For cable management, the RB Series features an integrated routing channel with Velcro straps. This design helps organize cables and creates a cleaner PC build. Furthermore, the RB750B includes six electrical protection mechanisms and carries a 5-year manufacturer warranty.

Overall, the LIAN LI RB750B provides a strong combination of power, efficiency, modern connectivity, cooling, and reliability. It is suitable for users building a powerful gaming PC or upgrading to an ATX 3.1 power supply.

Power Output – 750W

• 750W Maximum DC Output
• 750W Combined +12V Output
• Single +12V High-Amperage Rail
• Active PFC
• DC-DC Architecture
• High-Quality 105°C Capacitors

The LIAN LI RB750B delivers up to 750W of total DC power. Its +12V rail can also provide up to 750W, making the power supply suitable for performance-focused PC configurations.

The PSU uses high-quality 105°C capacitors and a DC-DC architecture. These components help maintain stable and consistent power delivery during demanding workloads.

With 750W of available power, the RB750B can support a wide range of gaming PC configurations. However, users should always check the recommended PSU wattage for their specific processor and graphics card combination.

80 PLUS Bronze Efficiency

• 80 PLUS Bronze Certified
• Up to 85% Energy Conversion Efficiency
• Reduced Power Waste
• Efficient Everyday Operation

The RB750B carries an 80 PLUS Bronze efficiency certification. According to LIAN LI, the RB Series provides up to 85% energy conversion efficiency.

Improved power efficiency helps reduce wasted energy and unnecessary heat. Therefore, the RB750B provides an efficient power solution for gaming and everyday desktop systems.

ATX 3.1 and Modern GPU Support

• ATX 3.1 Standard
• Native 12V-2×6 Connector
• Designed for Modern GPU Power Requirements
• Supports High Transient Loads
• Additional GPU Connectivity

The LIAN LI RB750B supports the ATX 3.1 standard and includes a native 12V-2×6 connector. This provides modern power connectivity for compatible graphics cards.

Additionally, the 750W model offers support for up to three PCIe 6+2-pin GPU connectors through its available cable configuration. This provides extra flexibility for compatible graphics cards that require traditional PCIe power connectors.

Smart Cable Management

• Integrated Cable Routing Channel
• Built-In Velcro Straps
• Three-Sided Cable Routing
• Flat Textured Cables
• Non-Modular DC Output Cable Design

The RB Series features a unique integrated cable management system. A deep routing channel and built-in Velcro straps help organize the power cables around the PSU housing.

This design helps reduce cable clutter inside the case. Moreover, the three-sided cable routing system can improve installation flexibility in compact cases and systems with rear-connector motherboards.

The result is a cleaner internal layout with more space for other PC components and improved cable organization.

Low-Noise Cooling

• 135mm HYB Fan
• Smart Temperature Control
• Maximum Fan Speed Up to 1600 RPM
• Efficient Heat Dissipation
• Stable Operation Under Load

The LIAN LI RB750B uses a large 135mm HYB temperature-controlled cooling fan. The fan automatically manages cooling according to operating conditions.

The larger fan design helps provide effective airflow for internal PSU components. As a result, the power supply can maintain stable operating temperatures during gaming and other demanding workloads.

Safety and Protection Features

The RB750B includes six protection mechanisms designed to protect the power supply and connected system components.

• OVP – Over Voltage Protection
• UVP – Under Voltage Protection
• OCP – Over Current Protection
• OPP – Over Power Protection
• OTP – Over Temperature Protection
• SCP – Short Circuit Protection

The power supply also carries multiple international safety certifications and comes with a 5-year warranty from LIAN LI.

Ideal For

• Gaming PCs
• High-Performance Gaming Systems
• Modern Graphics Card Builds
• ATX 3.1 PC Builds
• Content Creation Systems
• Productivity Workstations
• Micro-ATX Gaming PCs
• Compact Gaming Builds
• Future Hardware Upgrades

Quick Technical Summary

Brand: LIAN LI
Model: RB750B / RB0750B
Series: RB Series
Maximum Power Output: 750W
Combined +12V Output: 750W
Efficiency: 80 PLUS Bronze
ATX Standard: ATX 3.1
GPU Power: Native 12V-2×6 Connector
DC Output Cables: Non-Modular
Cooling Fan: 135mm HYB Fan
Maximum Fan Speed: 1600 RPM
Dimensions: 150 x 86 x 150mm
Color: Black
PFC: Active PFC
Protections: OPP, OVP, SCP, OCP, UVP, OTP
MTBF: Minimum 100,000 Hours at 25°C / 75% Load
Warranty: 5 Years

Official Product Link

LIAN LI RB Series Power Supply Official Product Page