Lian Li SX Platinum 1200W Fully Modular ATX 3.1 Black PSU | G9P.SX1200P.B000.EU

The Lian Li SX Platinum 1200W is a compact, high-efficiency fully modular power supply designed for powerful gaming PCs and performance workstations. Built to the ATX 3.1 and PCIe 5.1 standards, it delivers 1200W maximum output with up to 1200W available on the combined +12V rail, providing stable power for modern CPUs and high-performance graphics cards.

With 80 PLUS Platinum and PPLP Platinum efficiency certification, the SX Platinum can reach up to 94% conversion efficiency at 50% load. A 120mm FDB cooling fan supports smart stop/start operation, allowing fanless operation at loads up to approximately 40%, while its compact 140mm depth improves compatibility and cable-management space inside a wide variety of PC cases.

• 1200W Maximum Output: Designed for high-performance gaming and workstation systems
• ATX 3.1 Ready: Supports modern PSU requirements and transient power demands
• PCIe 5.1 Support: Designed for current-generation graphics hardware
• 200% Power Excursion Support: Handles short-duration power spikes up to twice the rated output
• 80 PLUS Platinum: High conversion efficiency helps reduce wasted power and heat
• PPLP Platinum Certified: Additional efficiency certification for the SX Platinum platform
• Up to 94% Efficiency: Reaches up to 94% conversion efficiency at 50% load
• Fully Modular Design: Install only the cables required by the system for cleaner cable management
• Native 12V-2×6 Support: High-current connector for modern graphics cards
• Copper-Alloy 12V-2×6 Terminals: Designed for secure high-current power delivery
• Dual-Color GPU Connector: Visual indicator helps confirm proper 12V-2×6 connector insertion
• Fanless Operation Up to 40% Load: Smart stop/start mode reduces fan noise under lighter loads
• Selectable Fanless Mode: Rear switch allows smart fan-stop behavior to be enabled or disabled
• 120mm FDB Fan: Fluid dynamic bearing fan provides PSU cooling
• 2000 RPM Maximum Fan Speed: Supports increased airflow during higher PSU loads
• 100% Japanese 105°C Capacitors: Uses Rubycon, Nippon Chemi-Con, or Nichicon capacitors
• Braided Main Cables: Main PSU cables use braided-texture sleeving for a cleaner build
• Cable Combs Included on Main Cables: Helps maintain organized motherboard, CPU, and GPU cable runs
• Extensive PCIe Power Support: 1200W model provides multiple PCIe 6+2-pin connections for high-power graphics hardware
• Compact 140mm Depth: Short ATX chassis improves compatibility and internal cable-routing room
• Open-Mesh PSU Panel: Supports ventilation and cooling airflow
• Comprehensive Protection: Includes OPP, NLP, OVP, SCP, OCP, OTP, SIP, and UVP protections