1. Introduction
Product Overview
The NZXT C850 Gold ATX 3.1 is a fully modular, low-noise power supply designed for PC gaming. It complies with the ATX 3.1 standard, ensuring stable and efficient power delivery for high-performance components. This power supply features an 80 PLUS Gold efficiency rating, a 12V-2x6 connector for NVIDIA GeForce RTX 40 Series graphics cards, and a Zero Fan Mode for silent operation under low loads. Constructed with 100% Japanese capacitors, it offers enhanced reliability and stable power output.
Figure 1: NZXT C850 Gold ATX 3.1 Power Supply and packaging.
2. Setup and Installation
Unboxing and Overview
Watch this official product overview video to familiarize yourself with the NZXT C850 Gold ATX 3.1 Power Supply and its contents.
Video 1: Official Product Overview of the NZXT C850 Gold ATX 3.1 Power Supply.
Physical Installation
Ensure your system is powered off and unplugged before installation. Mount the power supply securely in your PC case using the provided screws. Connect the necessary modular cables to the power supply unit first, then route them to your components.
Figure 2: Rear view of the NZXT C850 Gold ATX 3.1 Power Supply showing modular cable connections.
Cable Connections
The NZXT C850 Gold ATX 3.1 is fully modular, allowing you to connect only the cables required for your build. This helps improve airflow and cable management. Refer to the diagram below for connector types and quantities.
Figure 3: Diagram illustrating the fully modular cable connections on the NZXT C850 Gold ATX 3.1 Power Supply.
| Cable Type | Quantity |
|---|---|
| 24-pin (20+4) ATX Cable | 1 |
| 8-pin CPU Cable | 1 |
| 8-pin (4+4) CPU Cable | 1 |
| 8-pin (6+2) PCIe Power Cable | 3 |
| 16-pin (12+4) PCIe 12V-2x6 Cable | 1 |
| SATA Cable (4 Connectors) | 3 |
| Peripheral Cable (4 Connectors) | 1 |
3. Operating Instructions
Zero Fan Mode
The NZXT C850 Gold ATX 3.1 features a Zero Fan Mode. When enabled, the 135mm fluid dynamic bearing fan remains completely silent under loads below 50%. This mode optimizes noise levels during light usage. The fan will automatically activate when the load exceeds 50% to maintain optimal cooling.
Figure 4: NZXT C850 Gold ATX 3.1 Power Supply highlighting its efficiency and low noise operation with Cybenetics certifications.
4. High-Quality Components
The NZXT C850 Gold ATX 3.1 Power Supply is built with 100% premium Japanese capacitors. These high-quality components improve hold-up time and minimize ripple noise, ensuring stable and reliable power delivery to your system's critical components.
Figure 5: Internal view of a similar NZXT C-series power supply showing Japanese capacitors.
5. Maintenance
To ensure optimal performance and longevity of your NZXT C850 Gold ATX 3.1 power supply, regularly inspect the fan intake and exhaust vents for dust accumulation. Use compressed air to gently clean any dust buildup. Ensure all cable connections remain secure. Avoid opening the power supply unit, as this can void the warranty and expose you to dangerous electrical components.
6. Troubleshooting
No Power
If your system does not power on, check the following:
- Ensure the power supply's main switch on the rear is in the 'ON' position.
- Verify that the power cable is securely connected to both the power supply and the wall outlet.
- Confirm all modular cables are correctly seated into the power supply and the respective components (motherboard, CPU, GPU, etc.).
- Test the wall outlet with another device to ensure it is supplying power.
System Instability/Crashes
If your system experiences instability or crashes, especially under load, consider the following:
- Ensure your power supply wattage is sufficient for all your components. The C850 Gold provides 850 Watts.
- Check for loose cable connections, particularly to the motherboard and graphics card.
- Monitor system temperatures to rule out overheating components.
- Consult your component manufacturers' documentation for specific power requirements.
7. Technical Specifications
| Feature | Specification |
|---|---|
| Brand | NZXT |
| Model Number | PA-8G2BB-US |
| Output Wattage | 850 Watts |
| Efficiency Certification | 80 PLUS Gold |
| ATX Standard | ATX 3.1 |
| PCIe Connector | 12V-2x6 Connector |
| Fan Type | 135mm Fluid Dynamic Bearing |
| Fan Mode | Zero Fan Mode |
| Capacitors | 100% Japanese Capacitors |
| Form Factor | ATX |
| Dimensions (LxWxH) | 6.3 x 5.91 x 3.39 inches |
| Item Weight | 7.67 pounds |
8. Warranty and Support
The NZXT C850 Gold ATX 3.1 Power Supply comes with a 10-year warranty, ensuring long-term reliability and peace of mind. For technical support, warranty claims, or additional product information, please visit the official NZXT website or contact their customer service.
Official NZXT Store: NZXT Store on Amazon
