Lian Li SX Platinum 850W | 1000W | 1200W 80 Plus Platinum ATX 3.1 Ready PCIe 5.1 Braided Texture Cable Fully Modular Power Supply – White

LIAN LI SX Platinum Series – Premium ATX 80 PLUS Platinum Power Supply

The LIAN LI SX Platinum series represents the next evolution in high-performance power delivery for modern gaming, creator, and enthusiast PC builds. Engineered with uncompromising quality and cutting-edge electrical standards, this fully modular ATX power supply offers industry-leading efficiency, whisper-quiet operation, and long-term reliability — making it an ideal choice for high-end systems, flagship GPUs, and future-ready platforms.

Efficient, Stable Power for Demanding Builds

At the core of the SX Platinum series is its 80 PLUS® Platinum and PPLP Platinum certification, delivering up to 94 % power conversion efficiency at typical loads. This high efficiency minimizes wasted energy, reduces heat output, and lowers overall power consumption, helping systems run cooler and quieter while improving long-term operating costs.

Fully compliant with ATX 3.1 and PCIe 5.1 standards, the SX Platinum is designed to handle modern power demands with ease. It supports power excursions up to 200 %, ensuring stable and reliable power delivery even during sudden GPU or CPU load spikes common in high-performance gaming and professional workloads.

Silent, Intelligent Cooling Design

The SX Platinum series features an advanced thermal control system with semi-fanless operation. Under light to moderate workloads (up to approximately 40 % load), the cooling fan remains completely off, allowing for silent operation. When cooling is required, the fluid dynamic bearing (FDB) fan activates smoothly and adjusts its speed intelligently to maintain optimal temperatures while keeping noise levels low.

Premium Components and Fully Modular Cabling

Built for longevity and electrical stability, the SX Platinum uses 100 % Japanese-made capacitors rated at 105 °C, ensuring consistent voltage output and durability even under continuous high-load operation.

The fully modular cable design allows users to connect only the cables they need, reducing clutter and improving airflow inside the case. High-quality sleeved and braided cables, along with included cable combs, help achieve a clean, professional build appearance while enhancing durability.

Compact Form Factor with Future-Ready Connectivity

Despite its powerful capabilities, the SX Platinum features a compact 140 mm ATX length, making it compatible with a wide range of mid-tower and full-tower PC cases. This shorter depth provides additional room for cable routing and improved airflow.

The PSU includes multiple PCIe 6+2-pin connectors and 12V-2×6 support, delivering reliable power for modern and next-generation graphics cards. The reinforced high-current GPU connector ensures stable power transmission and long-term connector durability.

Comprehensive Protection and Long-Term Warranty

To protect both the power supply and connected components, the SX Platinum is equipped with a full suite of industrial-grade safety protections, including Over Voltage Protection (OVP), Under Voltage Protection (UVP), Over Current Protection (OCP), Over Power Protection (OPP), Short Circuit Protection (SCP), and Over Temperature Protection (OTP).

Completing the package is a 10-year manufacturer warranty, reflecting LIAN LI’s confidence in the SX Platinum’s build quality, reliability, and performance.