Next-Generation ATX 3.1 and PCIe 5.1 Power
Built to support the latest hardware standards, this power supply adheres to ATX 3.1 and PCIe 5.1 specifications. It includes a native 12V-2x6 connector, which replaces the older 12VHPWR standard to provide a more secure and reliable connection for modern, high-draw graphics cards. The unit delivers a robust 849.6W combined output on the +12V rail, ensuring your CPU and GPU receive stable, uninterrupted power during heavy gaming or rendering workloads.
Dual-Certified Platinum Efficiency and Premium Components
Efficiency directly impacts system temperatures and power draw at the wall. The SX Platinum 850W earns both 80 PLUS Platinum and Cybenetics Platinum certifications, guaranteeing minimal energy waste under load. Internally, the power supply is built with 100% Japanese 105°C capacitors. These premium components provide superior voltage regulation, reduce electrical ripple, and maintain long-term stability even in demanding thermal environments. Active PFC (>0.95) further ensures efficient power conversion.
Compact 140mm Footprint with FDB Cooling
Measuring just 150 x 140 x 86 mm, the 140mm depth is significantly shorter than many high-wattage ATX power supplies. This compact footprint frees up valuable space in the bottom chamber of your PC case, making it easier to route cables and store excess lengths without restricting airflow. Thermal management is handled by a 120 mm Fluid Dynamic Bearing (FDB) fan. Spinning at a maximum of 2000 RPM, the FDB design reduces friction to maintain quiet operation while extending the lifespan of the cooling mechanism.
Fully Modular Cabling for Clean PC Builds
A fully modular design means you only plug in the cables your system actually needs, eliminating case clutter and improving internal airflow. Alongside the 12V-2x6 cable, the unit provides comprehensive connectivity for a modern system.
| ATX Connector | 1 |
| EPS Connectors | 1 |
| PCIe Connectors | 4 |
| SATA Connectors | 4 |
| 12V-2x6 Connector | Yes |
Backed by a 10-Year Warranty
Designed for long-term reliability, the SX Platinum 850W boasts a Mean Time Between Failures (MTBF) of 100,000 hours. It incorporates a comprehensive suite of electrical protections, including OVP, UVP, OCP, OPP, SCP, OTP, NLP, and SIP, to shield your expensive components from power spikes or faults. Lian Li backs this power supply with a 10-year manufacturer warranty, providing peace of mind through multiple system upgrade cycles.