Hover to zoom · click for full imageA 750W 80 PLUS Bronze ATX 3.1 power supply with a native 12V-2x6 connector, an extra PCIe cable and a quiet 135mm fan for high-performance GPU builds.
The RB-750B is the flagship of Lian Li's RB Bronze line, giving high-performance gaming and workstation builds generous wattage headroom. Its 750W output and ATX 3.1 design handle the transient power demands of today's top graphics cards, and the native 12V-2x6 cable connects straight to a current-generation GPU without adapters.
To support multi-connector graphics cards, the 750W model adds an extra 100mm 12V-2x6 to PCIe 6+2-pin cable so you can drive triple 8-pin cards cleanly. The semi-modular design keeps the essential cables fixed while SATA and peripheral cables attach on demand, and built-in velcro straps on three sides keep everything tidy. The 135mm temperature-controlled fan stays quiet under normal use and ramps only when needed.
| Spec | Value |
|---|---|
| Wattage | 750W |
| Form Factor | ATX |
| ATX Specification | ATX 3.1 |
| PCIe Standard | PCIe 5.1 |
| Efficiency | 80 PLUS Bronze (up to 85% at 50% load) |
| Type | Semi-Modular (fixed 24-pin ATX, CPU-EPS and PCIe/12V-2x6; modular SATA and peripheral) |
| Main Connectors | Native 12V-2x6 (16-pin), PCIe 6+2-pin, 24-pin ATX, CPU-EPS, plus an extra 100mm 12V-2x6 to PCIe 6+2-pin cable |
| +12V Rail | Single rail, 62.5A (750W combined) |
| +3.3V & +5V Combined | 100W |
| Cooling Fan | 135mm HYB temperature-controlled fan |
| Protections | OVP, UVP, OCP, OPP, OTP, SCP |
| Dimensions (D x W x H) | 150 x 86 x 150mm |
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