1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Antec GSK 850W ATX3.1 80 Plus Gold Modular Power Supply. This power supply is designed for high-performance computing systems, offering stable and efficient power delivery with ATX 3.1 and PCIe 5.1 compatibility.
Please read this manual thoroughly before installing and using the product to ensure proper function and safety.
Figure 1: Antec GSK 850W Power Supply and packaging.
This image shows the Antec GSK 850W power supply unit (PSU) alongside its retail packaging. The PSU itself is white with a distinctive honeycomb-patterned fan grille. The packaging highlights key features such as 80 PLUS Gold certification, ATX 3.1, and PCIe 5.1 compatibility.
2. Safety Information
WARNING: Improper installation or use can lead to serious injury or damage to your system. Always follow these safety guidelines.
- Ensure the power supply is disconnected from the AC power outlet before installation or maintenance.
- Do not open the power supply casing. High voltages are present inside, and there are no user-serviceable parts. Opening the casing will void the warranty.
- Install the power supply in a well-ventilated area, away from heat sources and moisture.
- Use only the modular cables provided with this power supply. Using incompatible cables may cause damage to the PSU and connected components.
- Ensure all cables are securely connected before powering on the system.
- This product is designed for use in computer systems only. Do not use it for any other purpose.
3. Package Contents
Verify that all items are present in your package:
- Antec GSK 850W Power Supply Unit
- Modular Cable Set (see "Connections" in Features section for details)
- AC Power Cord
- Mounting Screws
- User Manual (this document)
4. Features
The Antec GSK 850W Power Supply offers the following key features:
- ATX 3.1 & PCIe 5.1 Compatible: Certified for ATX 3.1 compliance and includes a PCIe 5.1 12V-2x6 GPU cable for compatibility with the latest graphics cards, such as the NVIDIA GeForce RTX 40 Series.
- 120mm FDB Silent Fan: Fluid-dynamic bearing fan provides high airflow with quiet operation and long-lasting durability.
- Zero RPM Manager: Advanced thermal control that activates the fan only when necessary, ensuring optimal cooling and silent operation.
- Full Modular Cable Management: Allows for easy cable management and customization, reducing clutter and improving airflow.
- Connections:
- 1 x 24 (20+4) pin MB
- 1 x 16 (12+4) pin PCIe 5.1 12VHPWR
- 2 x 8 (4+4) pin CPU
- 4 x 8 (6+2) pin PCI-E
- 8 x SATA
- 4 x Molex
Figure 2: Modular cable connection ports on the Antec GSK 850W PSU.
This image displays the modular cable connection panel of the Antec GSK 850W power supply. The ports are clearly labeled for different cable types, including motherboard (MB), CPU, PCIe, and SATA/Molex, facilitating organized cable management.
5. Setup and Installation
Follow these steps to install your Antec GSK 850W Power Supply:
- Prepare Your System: Ensure your computer is completely powered off and unplugged from the wall outlet. Open your computer case.
- Remove Old PSU (if applicable): Disconnect all cables from your old power supply and remove it from the case.
- Mount the New PSU: Carefully slide the Antec GSK 850W PSU into the power supply bay of your computer case. Secure it with the provided mounting screws. Ensure the fan is facing the correct direction for optimal airflow (typically facing down if your case has a bottom vent, or up if it's a top-mounted PSU).
- Connect Modular Cables:
- Connect the necessary modular cables to the PSU first. Refer to the "Connections" list in the Features section.
- Connect the 24-pin ATX motherboard cable to your motherboard.
- Connect the 8-pin (4+4) CPU power cable(s) to your motherboard.
- Connect the PCIe 5.1 12V-2x6 cable to your compatible graphics card, or the 8-pin (6+2) PCIe cables to your graphics card(s) as required.
- Connect SATA power cables to your storage drives (HDDs, SSDs) and Molex cables to any other peripherals that require them.
- Cable Management: Route cables neatly to improve airflow and aesthetics.
- Close Case and Connect Power: Close your computer case. Connect the AC power cord to the PSU and then to a wall outlet or surge protector.
Figure 3: Rear panel of the Antec GSK 850W PSU.
This image shows the rear panel of the Antec GSK 850W power supply, featuring the AC power input, the main power switch, and a "Hybrid Mode" button. The Hybrid Mode button controls the Zero RPM fan function.
6. Operating Instructions
After installation, ensure the main power switch on the rear of the PSU is in the "ON" (I) position. You can then power on your computer as usual.
6.1. Zero RPM Manager (Hybrid Mode)
The Antec GSK 850W features a Zero RPM Manager, also known as Hybrid Mode. This function allows the PSU fan to remain off under low to moderate loads, providing silent operation.
- To enable Hybrid Mode (fan off at low loads), press the "HYBRID MODE" button on the rear of the PSU. The fan will only spin up when the internal temperature or load reaches a certain threshold.
- To disable Hybrid Mode (fan always on), press the "HYBRID MODE" button again. The fan will operate continuously, adjusting its speed based on load and temperature.
Figure 4: Angled view highlighting the Hybrid Mode button.
This angled view of the Antec GSK 850W power supply clearly shows the main power switch and the "HYBRID MODE" button located on the rear panel. The Hybrid Mode button allows users to toggle the Zero RPM fan function for quieter operation under low loads.
7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your power supply:
- Dust Removal: Periodically clean dust from the power supply's fan grille and vents using compressed air. Ensure the system is powered off and unplugged before cleaning.
- Environment: Operate the power supply in a clean, dry, and well-ventilated environment. Avoid extreme temperatures and humidity.
- Cable Inspection: Occasionally check all cable connections to ensure they are secure and free from damage.
8. Troubleshooting
If you encounter issues with your Antec GSK 850W Power Supply, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| System does not power on. |
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| System powers on but immediately shuts down. |
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| Fan is not spinning in Hybrid Mode. |
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| Unusual noises from PSU. |
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9. Specifications
| Attribute | Detail |
|---|---|
| Brand | Antec |
| Model Name | GSK 850W (0-761345-20093-6) |
| Output Wattage | 850 Watts |
| 80 PLUS Certification | Gold |
| ATX Version | ATX 3.1 |
| PCIe Compatibility | PCIe 5.1 (with 12V-2x6 cable) |
| Cooling Method | Air (120mm FDB Silent Fan) |
| Modular | Full Modular |
| UPC | 761345200936 |
| Date First Available | July 21, 2025 |
10. Warranty and Support
Antec products are manufactured to the highest quality standards. For detailed warranty information, please refer to the warranty card included with your product or visit the official Antec website.
For technical support, product registration, or further inquiries, please visit the Antec official website or contact their customer service department. Contact information can typically be found on the Antec website or product packaging.
