Description

]The Antec GSK1200 1200W is a fully modular ATX 3.1 power supply built for high-end desktop PCs. It delivers 1200 watts of 80 PLUS Gold certified power and features dual native 12V-2x6 connectors to support demanding PCIe 5.1 graphics cards. The compact 140mm chassis maximizes cable management space, while Japanese capacitors and an LLC + DC-DC topology ensure stable voltage regulation.

The Antec GSK1200 delivers 1200 watts of 80 PLUS Gold certified power in a compact 140mm chassis, fully supporting ATX 3.1 and PCIe 5.1 standards with dual native 12V-2x6 connectors for next-generation graphics cards.

Built for ATX 3.1 and High-Draw GPUs

Modern flagship graphics cards and high-core-count processors require power supplies capable of handling massive transient power spikes. The GSK1200 is built to the ATX 3.1 specification, ensuring it can safely manage the rapid power excursions demanded by modern hardware. It includes two native 16-pin 12V-2x6 connectors, allowing you to power top-tier PCIe 5.1 graphics cards directly from the unit without relying on bulky adapter cables.

Compact 140mm Footprint with Fully Modular Cabling

Despite its 1200W capacity, this power supply measures just 140mm in length. This compact footprint is highly unusual for a unit in this wattage class, providing significantly more clearance for cable management in standard ATX cases. The fully modular design means you only connect the cables your system actually requires, reducing clutter, improving case airflow, and simplifying the build process.

Stable Voltage Regulation and 80 PLUS Gold Efficiency

High-wattage systems require clean, stable power to maintain component longevity and system stability under heavy loads. The GSK1200 utilizes an LLC + DC-DC topology combined with high-quality Japanese capacitors to deliver tight voltage regulation and minimize ripple noise. It operates with an 80 PLUS Gold efficiency rating, converting more power from the wall into usable energy for your components, which reduces both excess heat generation and overall power draw.

Fluid Dynamic Bearing Fan with Zero RPM Mode

Cooling is handled by a 120mm Fluid Dynamic Bearing (FDB) fan. FDB fans use a thin layer of pressurized fluid to separate the bearing surfaces, resulting in less friction, lower acoustic output, and a longer operational lifespan than standard sleeve bearings. The unit also features a Zero RPM mode, which completely stops the fan during low-load tasks like web browsing or light office work, ensuring silent operation until the system requires active cooling.

Comprehensive Protection and Ten-Year Warranty

The GSK1200 is backed by an eight-point suite of industrial-grade protections to safeguard your hardware, including Over Current, Over Voltage, Under Voltage, Short Circuit, Over Power, Over Temperature, Surge and Inrush, and No Load Operation protections. Antec backs this 1200W unit with a 10-year warranty, providing long-term assurance for multiple build cycles.

Specification