1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Lian Li SX Platinum 850W SXP Compact ATX Form Factor Power Supply. Please read this manual thoroughly before installation and keep it for future reference.
Image 1: Lian Li SX Platinum 850W Power Supply (White Model)
2. Key Features
- 80 Plus Platinum Certified: Achieves up to 92% efficiency at 50% load, ensuring cooler, quieter, and more energy-efficient operation with stable voltage regulation.
- ATX 3.1 & PCIe 5.1 Compliant: Supports power excursions up to 200% of its rated output, delivering stable power for high-performance systems.
- Compact ATX Form Factor: With dimensions of 150 x 86 x 140 mm (5.9"W x 3.4"H x 5.5"D), it fits a wide range of cases, including mATX, leaving more interior space.
- Fully Modular Design: Allows installation of only necessary cables, reducing clutter and improving airflow.
- Ample PCIe 6+2 Connectors: Provides sufficient connectors for multiple accessories and modern graphics cards.
- Smart Cooling Technology: Features a fanless mode at ≤40% load for silent operation, maintaining optimal temperatures during high loads.
- Flexible Braided Cables: Super flexible DC cables facilitate effortless cable management and a clean aesthetic.
- 105°C-Rated Capacitors: Built with 100% Japanese 105°C-rated capacitors for exceptional durability and stable performance under thermal stress.
- 10-Year Hardware Protection: Ensures long-term stability and peace of mind.
3. Setup and Installation
Before beginning installation, ensure your system is powered off and disconnected from the main power source. Refer to your PC case manual for specific power supply mounting instructions.
3.1 Unboxing and Component Check
Carefully unpack the power supply and its accessories. Verify all components listed in the package contents are present.
Video 1: Lian Li SXP Platinum PSU unboxing video. This video demonstrates the unboxing process and shows the included components of the power supply.
3.2 Mounting the Power Supply
Install the power supply into the designated bay in your PC case. Secure it using the provided screws.
3.3 Cable Connection
Due to the fully modular design, connect only the cables required for your system components. Ensure all connections are firm and correctly oriented.
Image 2: Cable Configuration. This image illustrates the various connector types, quantities, and cable lengths for the 850W, 1000W, and 1200W models.
The SX Platinum series includes braided cables for a clean and professional look. Ensure the 12V-2x6 connector's blue section is fully inserted when connecting to the graphics card for safe and efficient power delivery.
Image 3: Braided Cables for a Finished Look. This image highlights the aesthetic and functional benefits of the braided cables and cable combs.
Image 4: Stable Dual-Color PCIe 5.1 Connector. This image details the construction of the 12V-2x6 copper-alloy terminal for enhanced stability and performance.
4. Operating Instructions
4.1 Smart Stop/Start Fan Mode
The power supply features a Smart Stop/Start fan mode. When the PSU load is at or below 40%, the fan enters this mode to keep the system quiet under low loads. This feature can be enabled or disabled using the switch on the rear of the unit.
Image 5: Smart Stop/Start Switch. This image shows the physical switch on the power supply for enabling or disabling the fanless mode.
4.2 Power On/Off
After all connections are made, connect the power supply to a wall outlet and flip the main power switch to the 'ON' position. Your system should now be ready to power on.
Video 2: LianLi - SX Series PSU product video. This video provides an overview of the SX Series Power Supply, showcasing its features and design.
5. Maintenance
To ensure optimal performance and longevity of your power supply, regular maintenance is recommended:
- Keep Vents Clear: Ensure the power supply's intake and exhaust vents are free from dust and obstructions to allow for proper airflow.
- Dust Removal: Periodically clean the power supply and surrounding area with compressed air to prevent dust buildup, which can hinder cooling efficiency.
- Cable Management: Maintain tidy cable management to improve airflow within your PC case, contributing to lower operating temperatures for all components, including the PSU.
6. Troubleshooting
If you encounter issues with your Lian Li SX Platinum Power Supply, consider the following steps:
- No Power: Check all power connections, including the wall outlet, power cable to the PSU, and internal connections (24-pin ATX, CPU, PCIe). Ensure the main power switch on the PSU is in the 'ON' position.
- System Instability/Crashes: Verify that your system's power requirements do not exceed the 850W capacity of the PSU. Ensure all cables are securely connected, especially the 12V-2x6 connector for the GPU.
- Fan Noise: If the fan is operating at high loads, this is normal. If the fan is excessively noisy at low loads, check if the Smart Stop/Start feature is enabled or disabled as desired.
- Missing Parts or Cable Issues: For any missing parts or cable color issues, contact Lian Li RMA support for assistance or replacement.
If problems persist after following these steps, please contact Lian Li customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | SX0850P.W |
| Brand | Lian Li |
| Output Wattage | 850 Watts |
| Form Factor | ATX |
| Product Dimensions | 5.91 x 3.39 x 5.51 inches (150 x 86 x 140 mm) |
| Item Weight | 6.38 pounds |
| Efficiency Certification | 80 Plus Platinum |
| Connector Type | PCI Express (12V-2x6) |
| Cooling Method | Air (140mm FDB fan) |
| Fan Count | 1 |
| Hardware Protection | 10 Years |
Image 6: Detailed Specifications Table. This table provides comprehensive technical details for the SX Platinum series, including the SX0850P model.
8. Warranty and Support
The Lian Li SX Platinum 850W Power Supply comes with a 10-year hardware protection warranty. This warranty covers defects in materials and workmanship under normal use.
For warranty claims, technical support, or inquiries regarding missing parts or cable issues, please contact Lian Li customer support through their official website or the retailer where the product was purchased. Please have your product model number (SX0850P.W) and proof of purchase ready.
Image 7: 10-Year Hardware Protection. This image highlights the extensive warranty period for the SX Platinum Series.