Introduction
The EVGA SuperNOVA 850 G2 is a high-performance, fully modular power supply designed to deliver stable and continuous power to your computer system. It features 80 PLUS Gold certified efficiency, ensuring up to 90% efficiency under typical loads, and includes EVGA ECO Mode for silent operation at low power consumption. This manual provides essential information for the proper installation, operation, maintenance, and troubleshooting of your power supply.
Setup
Unpacking and Contents
Carefully unpack the power supply and verify that all components are present. The package should include:
- EVGA 850G2 Power Supply
- ATX Cable
- EPS Cable
- PCIE Cables
- SATA Cables
- Four-Pin Peripheral Cables
- Floppy Adapter
- AC Power Cable
- Installation Guide
- Power Supply Tester
Safety Precautions
- Ensure the power supply is disconnected from the AC power outlet before installation or handling.
- Do not open the power supply casing. There are no user-serviceable parts inside, and opening it voids the warranty and poses a risk of electric shock.
- Install the power supply in a well-ventilated area, away from heat sources and moisture.
- Use only the cables provided with your EVGA power supply.
Installation Steps
- Mounting the Power Supply: Secure the power supply into your computer case using the provided screws. Ensure the fan is oriented correctly for optimal airflow, typically facing downwards if your case has a bottom vent, or upwards if mounted at the top.
- Connecting Modular Cables: Identify the appropriate modular cables for your components. The EVGA SuperNOVA 850 G2 is fully modular, allowing you to connect only the necessary cables, which helps improve airflow and cable management within your case.
Image: Rear view of the EVGA SuperNOVA 850 G2 power supply, illustrating the clearly labeled modular cable connection ports for various components such as VGA, CPU, Peripheral, SATA, and the main motherboard (MB) connector.
Connect the main 24-pin ATX cable to the 'MB' port on the power supply and to your motherboard. Connect the 8-pin EPS (CPU) cables to the 'CPU' ports on the power supply and to your motherboard's CPU power connectors. For graphics cards, use the 6+2 pin PCIe cables connected to the 'VGA' ports on the power supply and to your GPU. Use SATA cables for storage drives and peripheral cables for other devices.
Image: A comprehensive view of the various black modular cables supplied with the EVGA SuperNOVA 850 G2 power supply. This includes cables for SATA devices, CPU power, main motherboard power, PCIe graphics cards, and peripheral devices, along with mounting screws and a power-on self tester.
- Using the Power On Self Tester: Before installing the PSU into your system, you can use the included Power Supply Tester to verify basic functionality. Connect the 24-pin ATX cable to the tester and plug in the AC power cable. If the PSU fan spins and the tester indicates power, the unit is functional.
- Connecting AC Power: Once all internal connections are secure, connect the AC power cable to the power supply and then to a wall outlet or surge protector.
Operating
Powering On/Off
After installation, ensure the power switch on the back of the PSU is in the 'On' (I) position. You can then power on your computer system as usual. To power off, shut down your computer normally and then switch the PSU to the 'Off' (O) position if desired for complete power disconnection.
EVGA ECO Mode
The EVGA SuperNOVA 850 G2 features an ECO Thermal Control Fan System. When ECO Mode is enabled (switch in 'On' position), the power supply fan will remain off during low to moderate loads, providing silent operation. The fan will automatically activate when the load increases or internal temperatures rise to maintain optimal cooling. When ECO Mode is disabled (switch in 'Off' position), the fan will operate continuously.
Image: Rear panel of the EVGA SuperNOVA 850 G2 power supply, highlighting the ECO OFF/ON switch located above the AC power input and main power switch. This switch controls the fan's operation mode.
Maintenance
To ensure the longevity and optimal performance of your EVGA SuperNOVA 850 G2 power supply, consider the following maintenance tips:
- Dust Removal: Periodically clean the exterior of the power supply and its fan grille to prevent dust buildup, which can impede airflow and lead to overheating. Use compressed air for best results, ensuring the system is powered off and unplugged.
- Ensure Proper Airflow: Verify that your computer case has adequate ventilation and that no cables or obstructions are blocking the power supply's intake or exhaust vents.
Troubleshooting
If you encounter issues with your EVGA SuperNOVA 850 G2 power supply, consider the following:
- PSU Not Turning On:
- Check that the AC power cable is securely connected to both the PSU and the wall outlet.
- Ensure the main power switch on the PSU is in the 'On' (I) position.
- Verify all modular cables are firmly seated in both the PSU and the components.
- If using the Power Supply Tester, confirm it indicates functionality. If not, the PSU may be faulty.
- Ensure you are using the screws provided with the PSU for mounting, as some unpainted screws may interfere with proper grounding and operation.
- System Instability or Crashes:
- Ensure your system's power requirements do not exceed the 850W capacity of the PSU.
- Check all power connections to the motherboard, CPU, and graphics cards.
- Verify that the PSU is receiving adequate airflow and is not overheating.
- Fan Noise:
- If ECO Mode is enabled, the fan will not spin at low loads. This is normal operation.
- If the fan is excessively noisy when operating, ensure it is free from dust and obstructions.
For further assistance, please contact EVGA customer support.
Specifications
| Feature | Specification |
|---|---|
| Brand | EVGA |
| Model Number | 220-G2-0850-XR |
| Output Wattage | 850 Watts |
| Efficiency | 80 PLUS Gold certified (up to 90%) |
| Form Factor | ATX |
| Fan Size / Bearing | 140mm Double Ball Bearing |
| Modular Type | Fully Modular |
| Dimensions (LxWxH) | 7 x 5.9 x 3.4 inches |
| Item Weight | 6.6 pounds |
| Protections | OVP, UVP, OCP, OPP, SCP |
Warranty and Support
The EVGA SuperNOVA 850 G2 power supply is backed by a 10-year warranty. To ensure your warranty is valid, it is recommended to register your product with EVGA within 30 days of purchase. For detailed warranty terms and conditions, please refer to the official EVGA website.
For technical support, troubleshooting assistance, or warranty claims, please visit the official EVGA support website or contact their customer service department. Have your product model number (220-G2-0850-XR) and proof of purchase ready when contacting support.
