The Antec GSK850 V2 AU is an 850W 80+ Gold fully modular ATX 3.1 power supply engineered for high-performance gaming systems. It features native PCIe 5.1 support with a dedicated 12V-2×6 connector to safely deliver up to 849.6W on the +12V rail to modern graphics cards. Built with a compact 140mm depth, this unit includes a 120mm silent fan with Zero RPM mode and a comprehensive protection suite. This fully modular ATX power supply simplifies cable management and is backed by a 10-year warranty.

The Antec GSK850 V2 AU delivers 850W of 80+ Gold certified power in a compact 140mm frame, fully compliant with the latest ATX 3.1 and PCIe 5.1 standards. This power supply is engineered to handle the high transient power spikes of modern hardware while maintaining optimal electrical efficiency.

Next-generation power delivery with ATX 3.1 and PCIe 5.1

Built to support demanding hardware, this power supply adheres to the strict ATX 3.1 standard to manage rapid power excursions. It features a native 16-pin PCIe 5.1 12V-2×6 connector, which provides a more secure physical connection and reliable power delivery directly to modern graphics cards. This design eliminates the need for bulky adapters, ensuring your high-end GPU receives stable power under heavy gaming or rendering workloads.

Server-grade PhaseWave design and 80+ Gold efficiency

The internal architecture utilizes a PhaseWave design, a server-class layout featuring active PFC to ensure high-efficiency power conversion. With an 80+ Gold efficiency rating, the unit wastes less energy as heat, reducing overall power consumption and operating costs. The single +12V rail delivers up to 70.8A, translating to 849.6W of continuous power dedicated to the most critical system components like the CPU and graphics card.

Compact 140mm footprint with Zero RPM cooling

Measuring just 140mm in length, 150mm in width, and 86mm in height, this ATX power supply is exceptionally compact. The reduced depth frees up valuable space inside your chassis, making it easier to route cables and improving overall system airflow. Cooling is handled by a 120mm silent fan that adjusts its speed dynamically based on system load. Under light loads, the Zero RPM mode completely stops the fan, ensuring silent operation during basic desktop tasks or media playback.

Fully modular cabling for clean, unrestricted airflow

The fully modular design allows you to connect only the cables your system requires, eliminating clutter and improving case aesthetics. The connector layout includes:

• 1x 24(20+4)pin Motherboard connector
• 1x 16(12+4)pin PCIe 5.1 12V-2×6 connector
• 2x 8(4+4)pin CPU connectors
• 4x 8(6+2)pin PCIe connectors
• 8x SATA connectors
• 4x Molex connectors

Ten-year warranty and multi-tier industrial protection

Antec backs this unit with a 10-year warranty, reflecting its long-term reliability. The power supply is equipped with a comprehensive suite of industrial-grade protections to safeguard your components against electrical anomalies. These safety measures operate continuously to prevent damage from over-current, over-voltage, and thermal issues: