Power supply unit Lian Li SX Series 80 PLUS Platinum fully modular PCIe 5.1 ATX 3.1 1000 W

The Lian Li SX Series 80 PLUS Platinum fully modular power supply delivers a stable 1000 W output while meeting ATX 3.1 and PCIe 5.1 standards. Designed for compact and full-size PC builds, this PSU combines high efficiency with modern connectivity to support current high-performance GPUs and future upgrades. The fully modular cable set allows precise cable management and cleaner airflow within the chassis.

Advantages

High 80 PLUS Platinum efficiency reduces wasted energy and operating temperatures while improving system stability under sustained loads. Full modularity simplifies assembly and maintenance by letting users attach only the cables they need. Compliance with ATX 3.1 ensures up-to-date power delivery and signaling, and PCIe 5.1 compatibility provides the correct connectors and power specifications required by modern graphics cards. The unit’s 1000 W continuous output is suitable for multi-component systems, overclocked CPUs, and demanding GPU configurations.

Suitable for

• High-performance gaming PCs with modern graphics cards
• Workstations used for video editing, 3D rendering, and CAD
• Overclocked systems that require reliable continuous power
• Compact and small-form-factor builds where modular cables help with space and airflow

Key specifications

• Rated continuous power: 1000 W
• Efficiency certification: 80 PLUS Platinum
• Form factor and standard: ATX 3.1 compatible
• GPU support: PCIe 5.1 compatible connectors and power delivery
• Cabling: fully modular cable design for customizable connectivity
• Cooling: temperature-optimized fan operation for quiet performance

How to use

Install the PSU into a compatible ATX 3.1 chassis following the case manufacturer’s instructions. Connect the main 24-pin motherboard connector and required CPU power connectors, then attach PCIe 5.1-compatible GPU power cables as needed. Use only the modular cables supplied by the manufacturer to ensure correct signal and power integrity. Route cables to avoid obstructing airflow and secure them with ties or channels inside the case. Verify connections before powering on and monitor voltages during initial system boot.

Recommendations

For best results, pair the PSU with components that match the unit’s power and connector specifications, ensure adequate case ventilation, and perform periodic inspections of modular cable seating and fan operation to maintain long-term reliability.