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

The Power supply Lian Li SX Series 80 PLUS Platinum fully modular PCIe 5.1 ATX 3.1 1000W delivers high-efficiency power for modern high-performance PCs. This ATX power supply from Lian Li provides a 1000 W maximum output and 80 PLUS Platinum efficiency, with a fully modular cable design that simplifies installation and improves cable management. It supports PCIe 5.1 and ATX 3.1 standards to ensure compatibility with current-generation graphics cards and motherboards, making it suitable for gaming rigs, workstations and other systems that require stable, efficient power delivery.

Advantages

The fully modular design allows users to connect only the cables they need, reducing clutter inside the chassis and improving airflow. The 80 PLUS Platinum efficiency rating minimizes energy loss and heat production under typical loads, supporting quieter cooling and lower electricity consumption. Compliance with PCIe 5.1 and ATX 3.1 standards ensures the unit can meet power delivery requirements of modern components. The 1000 W output gives headroom for multi-GPU or high-core-count CPU systems while maintaining stable voltages for sustained performance.

Suitable for

• High-performance gaming PCs
• Professional workstations for rendering or simulation
• System builds requiring PCIe 5.1 support for modern GPUs
• Compact ATX systems that benefit from modular cable management

Key specifications

• Total output power: 1000 W
• Efficiency rating: 80 PLUS Platinum
• Cable type: Fully modular
• Standards supported: PCIe 5.1, ATX 3.1

How to use

Install the power supply in a compatible ATX chassis following the chassis manufacturer’s instructions. Connect required modular cables to the PSU and then to the motherboard, processor power connector, graphics card(s) and storage devices according to the component manuals. Ensure the unit is securely mounted, that airflow is not obstructed, and that all connectors are firmly seated before powering the system. Configure BIOS/UEFI power settings if necessary to match advanced platform features supported by ATX 3.1.

Recommendations

Use high-quality modular cables provided with the unit and route them to maximize airflow. Verify power requirements of all installed components to keep total system load within the 1000 W capacity. Keep the PSU intake and exhaust clear of dust and obstructions and perform periodic maintenance to preserve efficiency and longevity.