1. Introduction
The be quiet! Pure Power 12 M 850W is a modular power supply designed for high-performance PC systems. It is ATX 3.1 compliant and PCIe 5.0 compatible, offering high efficiency and stable power delivery. This manual provides essential information for the proper installation, operation, and maintenance of your power supply unit (PSU).
2. Safety Instructions
Please read the following safety instructions carefully before installing or operating the power supply. Failure to comply may result in electric shock, fire, or damage to the product and connected components.
- Always disconnect the power supply from the mains electricity before installation, removal, or any maintenance work.
- Do not open the power supply casing. High voltages are present inside, and opening it will void the warranty.
- Ensure proper grounding of your PC system.
- Use only the modular cables provided with your be quiet! Pure Power 12 M 850W power supply. Using incompatible cables may cause damage.
- Avoid exposing the power supply to moisture, dust, or extreme temperatures.
- Ensure adequate ventilation around the power supply to prevent overheating.
- If you experience any issues, refer to the troubleshooting section or contact customer support.
3. Setup and Installation
This section guides you through the process of installing your new power supply into your PC system.
3.1 Unpacking the Power Supply
Carefully remove the power supply and its accessories from the packaging. Verify that all components listed in the package contents are present.
Figure 1: The be quiet! Pure Power 12 M 850W Modular Power Supply.
Figure 2: Included modular cables for the Pure Power 12 M 850W.
3.2 Mounting the Power Supply
- Ensure your PC case is compatible with ATX form factor power supplies.
- Position the power supply in the designated PSU bay of your PC case.
- Secure the power supply to the case using the provided screws. Ensure the fan is facing the correct direction for optimal airflow (typically facing downwards if there's a bottom vent, or upwards if not).
3.3 Connecting Modular Cables
The Pure Power 12 M 850W features fully modular cabling, allowing you to connect only the necessary cables for a cleaner build and improved airflow.
Figure 3: Modular connector panel of the Pure Power 12 M 850W, showing various ports for motherboard, CPU, PCIe, and drive connections.
- 24-pin ATX Motherboard Cable: Connect the large 24-pin cable to the corresponding port on your motherboard and the PSU.
- CPU Power Cables (P8): Connect the 4+4 pin or 8-pin CPU power cables to your motherboard's CPU power connectors and the PSU.
- PCIe Power Cables:
- For modern GPUs, use the dedicated 12VHPWR (12V-2x6) 600W cable.
- For other GPUs or additional power, use the 6+2 pin PCIe connectors.
- SATA and Molex Cables (DRIVES): Connect these cables to your storage drives (HDDs, SSDs) and other peripherals as needed.
Ensure all cables are securely seated to prevent power delivery issues.
4. Operating Instructions
The be quiet! Pure Power 12 M 850W is designed for efficient and quiet operation.
4.1 Powering On Your System
- After connecting all necessary components, ensure the power switch on the back of the PSU is in the "OFF" (0) position.
- Connect the AC power cord to the PSU and then to a wall outlet.
- Flip the power switch on the PSU to the "ON" (I) position.
- Press the power button on your PC case to start your system.
4.2 Key Features and Performance
- 80 Plus Gold Efficiency: The PSU operates with up to 93.0% efficiency, minimizing energy waste and heat generation.
- ATX 3.1 & PCIe 5.1 Ready: Designed to support the latest GPUs and future hardware with dedicated 12V-2x6 600W and 6+2 pin connectors.
- Stable Power Delivery: Provides 850W continuous power with dual 12V rails, capable of handling transient power spikes up to 2000W.
- Ultra-Quiet Operation: Equipped with a silent 120mm be quiet! fan with temperature-controlled speed adjustments and airflow-optimized blades, ensuring minimal noise even under heavy loads.
Figure 4: The 80 Plus Gold certification ensures high energy efficiency.
Figure 5: The silent 120mm fan ensures quiet operation.
Video 1: An overview of be quiet! Power Zone PC Power Supplies, highlighting features relevant to the Pure Power 12 M series.
5. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your power supply.
- Cleaning: Periodically clean the exterior of the power supply and the fan grille to prevent dust buildup, which can impede airflow and cooling. Use compressed air or a soft brush. Always disconnect power before cleaning.
- Cable Management: Ensure cables are neatly routed and do not obstruct airflow within the PC case.
- Environmental Conditions: Operate the power supply in a well-ventilated area with stable room temperature. Avoid extreme humidity.
6. Troubleshooting
If you encounter issues with your power supply, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| PC does not power on. | Power cable not connected, PSU switch off, faulty components. | Check AC power cord connection. Ensure PSU switch is "ON". Verify all modular cables are securely connected. Test with minimal components (CPU, RAM, GPU). |
| System powers on but shuts down immediately. | Overload, short circuit, overheating, faulty component. | Ensure total wattage does not exceed 850W. Check for loose connections or short circuits. Ensure adequate ventilation. |
| Unusual noise from PSU. | Fan obstruction, faulty fan, coil whine. | Check for any obstructions in the fan. Ensure PSU is securely mounted. If noise persists and is excessive, contact support. |
| Peripherals (e.g., hard drives) not detected. | Loose or incorrect SATA/Molex power connection. | Verify SATA/Molex cables are correctly connected to both the PSU and the peripheral. |
If the problem persists after attempting these solutions, please contact be quiet! customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | be quiet! |
| Model Name | Pure Power 12 M 850W (BN505) |
| Output Wattage | 850 Watts |
| Efficiency Certification | 80 Plus Gold (up to 93.0%) |
| ATX Version | ATX 3.1 |
| PCIe Compatibility | PCIe 5.1 (12V-2x6 600W connector included) |
| Power Supply Design | Full Modular |
| Cooling Method | Air (Silent 120mm be quiet! Fan) |
| Product Dimensions (L x W x H) | 5.91 x 3.39 x 6.3 inches |
| Item Weight | 6.96 pounds |
| Compatible Devices | PC |
8. Warranty and Support
The be quiet! Pure Power 12 M 850W Modular Power Supply comes with a 10-year manufacturer's warranty, ensuring long-term reliability and peace of mind.
For technical support, warranty claims, or further assistance, please visit the official be quiet! website or contact their customer service department.
Official be quiet! Website: www.bequiet.com
