Antec 850W ATX3. 1 PSU, White, Gold Cert

Antec GSK ATX3.1 850W | High-Performance Power Supply for Modern Gaming Systems

The Antec GSK ATX3.1 850W Power Supply, White,80 PLUS Gold, Full Modular, PCIe 5.1, JP Capacitors, Silent FDB Fan, CircuitShield Protection delivers exceptional efficiency and stability for gaming and enthusiast systems. Designed with ATX 3.1 compliance and PCIe 5.1 compatibility, it provides reliable power delivery for the latest NVIDIA GeForce RTX 40 Series graphics cards while maintaining quiet operation through advanced thermal management.

Slim Specs Table

Future-Proof Power for Next-Gen Components

This power supply features ATX 3.1 compliance and PCIe 5.1 compatibility, making it ready for the most demanding modern components. The included PCIe 5.1 12V-2×6 GPU cable ensures full compatibility with NVIDIA GeForce RTX 40 Series graphics cards, providing stable power delivery for high-performance gaming rigs. The ATX 3.1 standard supports higher power delivery for PCIe 5.0 devices, protecting your investment as component power requirements continue to increase.

Premium Components for Maximum Stability

High-quality Japanese capacitors form the foundation of this power supply’s reliability. These JP capacitors provide tight voltage regulation with minimal ripple and noise, ensuring clean power delivery to sensitive components. The PhaseWave™ design employs a server-class LLC topology with synchronous rectification, delivering unparalleled efficiency and stability even under heavy loads. This engineering approach reduces heat generation and extends component lifespan, making it ideal for systems running 24/7 or under constant heavy workloads.

Comprehensive Protection for System Safety

CircuitShield™ protection encompasses eight different safety mechanisms including OCP (Over Current Protection), OVP (Over Voltage Protection), UVP (Under Voltage Protection), SCP (Short Circuit Protection), OPP (Over Power Protection), OTP (Over Temperature Protection), SIP (Surge In Protection), and NLO (No Load Operation). These protections work together to safeguard your valuable components from electrical faults, power surges, and other potential hazards. The 7-year warranty demonstrates Antec’s confidence in this power supply’s long-term reliability and durability.

Silent Operation with Intelligent Cooling

The 120mm Fluid Dynamic Bearing (FDB) fan provides high airflow while maintaining whisper-quiet operation. The Zero RPM Manager technology keeps the fan completely stopped during low to medium loads, eliminating noise entirely during typical usage scenarios. When cooling becomes necessary, the fan ramps up gradually to maintain optimal temperatures without sudden noise increases. This intelligent thermal management extends fan life while ensuring your system remains quiet during both light productivity tasks and intense gaming sessions.

Flexible Cable Management for Clean Builds

Full modular cable design allows you to connect only the cables you need, reducing clutter and improving airflow within your case. The compact form factor (140 x 150 x 86 mm) fits into a wider range of computer cases compared to larger power supplies, making it suitable for both spacious ATX cases and more compact builds. This space-saving design also improves airflow routing and makes cable management significantly easier, contributing to better overall system cooling and aesthetics.

Box contents

• Antec GSK ATX3.1 850W Power Supply Unit
• PCIe 5.1 12V-2×6 GPU cable
• Modular cables (various connectors)
• Mounting screws
• User manual
• Warranty card

Check before you buy

• Confirm your case has sufficient space for the 140 x 150 x 86 mm dimensions
• Verify your graphics card requires the PCIe 5.1 12V-2×6 connector
• Check your system’s total power consumption to ensure 850W meets your needs
• Confirm the power supply’s UKCA/CE certifications meet your regional requirements

Frequently Asked Questions

Q: Is this power supply compatible with older graphics cards?

A: Yes, it includes standard PCIe 8-pin connectors alongside the PCIe 5.1 cable for full backward compatibility.

Q: Can this power supply handle overclocked components?

A: The 850W capacity and high-quality components provide stable power for moderate overclocking scenarios.

Q: Does the Zero RPM mode work with all motherboards?

A: The fan control is built into the power supply and works independently of motherboard support.

Q: What type of warranty coverage is provided?

A: This power supply comes with a 7-year manufacturer warranty covering defects in materials and workmanship.

Q: Is this power supply suitable for multi-GPU setups?

A: With 850W capacity and multiple PCIe connectors, it can support certain multi-GPU configurations depending on total system power draw.

The Consultant’s verdict & warranty

The Antec GSK ATX3.1 850W Power Supply represents an excellent choice for gamers and enthusiasts building modern systems with high-end components. Its ATX 3.1 compliance, PCIe 5.1 compatibility, and comprehensive protection features make it a future-proof investment for systems running the latest hardware. The combination of 80 PLUS Gold efficiency, silent operation, and full modularity delivers both performance and practicality. Covered by the standard Manufacturer Warranty.