Lian-Li SX1200P.B 1200W 80+ Platinum Modular ATX Power Supply

Product Overview

The Lian-Li SX1200P.B is a 1200W ATX power supply designed to deliver high-capacity power for compatible desktop PC builds. Its 80 PLUS Platinum efficiency rating identifies it as an efficiency-focused choice for demanding systems, helping reduce power lost as heat during operation under applicable testing conditions. The fully modular cable design lets you connect the cables your build needs and leave unused cables out of the case, supporting a tidier installation and easier cable management.

With 1200 watts of rated output, this unit is suited to systems that need substantial power capacity. Check your components’ power requirements, case clearance, and motherboard and graphics-card connections before purchase. This listing describes the product identified by the supplied UPC and confirmed product title; it does not claim unverified connector counts, dimensions, cooling details, or electrical input ranges.

Key Features

• 1200W rated capacity: Provides a high overall power budget for compatible desktop PC components. Confirm that the total requirements and recommended PSU capacity for your specific components are suitable before installation.

• 80 PLUS Platinum rating: Indicates Platinum-class power-conversion efficiency under the certification’s specified test conditions. Actual efficiency varies with system load and operating conditions.

• Fully modular cable arrangement: Power cables are detachable, allowing the installer to use the connections needed for the build and avoid routing unnecessary cables through the case.

• ATX power supply format: Identified as an ATX PSU in the confirmed product title. Verify case support and physical fit against the manufacturer’s product information before ordering.

• Desktop PC application: Intended for use as a computer power supply. Check system compatibility, required motherboard and component connectors, and safe installation guidance before use.

• Model identification: The confirmed model designation is SX1200P.B. The title does not specify additional features such as fan mode, cable inventory, or protection functions, so these are not represented as confirmed specifications here.

Technical Specifications

• Product type: ATX computer power supply.

• Rated power capacity: 1200W, as stated in the confirmed title.

• Efficiency certification: 80 PLUS Platinum, as stated in the confirmed title.

• Cable configuration: Modular; the confirmed title identifies the unit as modular but does not establish a cable count or specific connector inventory.

• Brand: Lian-Li, derived from the confirmed product title.

• Model / MPN designation: SX1200P.B, taken from the confirmed title.

• UPC: 840353052031.

• Connector details, dimensions, input specifications, and included accessories: Not specified in the supplied confirmed product information. Please verify these details for your system before purchase.

What's in the Box

This listing is for the Lian-Li SX1200P.B 1200W 80 PLUS Platinum modular ATX power supply identified above. The supplied product information does not confirm which cables, mounting hardware, documentation, or other accessories are included, so the box contents beyond the power supply itself are not specified. Please review the listing photos and any seller-provided condition notes for details about the particular item being offered.