be quiet! Pure Power 850W PSU

be quiet! Pure Power 13 M 850W | Gold ATX 3.1 PSU

The be quiet! Pure Power 13 M 850W power supply unit 20+4 pin ATX ATX Black delivers exceptional quiet operation and superior features for demanding PC builds. This ATX 3.1 compliant and PCIe 5.1 compatible PSU combines semi-passive cooling with best-in-class dependability, making it ideal for high-performance systems where silence and reliability matter.

Slim Specs Table

Whisper-Quiet Performance for Gaming and Content Creation

The be quiet! Pure Power 13 M 850W features semi-passive cooling that keeps noise levels at just 30.2 dB under typical loads. The 120mm rifle-bearing fan remains off during low-power operation, ensuring your workspace stays quiet during light tasks like web browsing or document editing. For gamers and content creators running demanding applications, this PSU maintains whisper-quiet operation even under sustained load, letting you focus on your work without distracting fan noise.

Future-Proof ATX 3.1 and PCIe 5.1 Compatibility

This PSU is ready for next-generation hardware with full ATX 3.1 compliance and PCIe 5.1 support. The included PCIe 5.1 cable handles the extreme power demands of upcoming graphics cards, while the four PCIe 6+2 cables ensure compatibility with current-gen GPUs. Whether you’re building today or upgrading tomorrow, the Pure Power 13 M 850W provides the headroom and connectivity needed for cutting-edge components, making it a smart investment for long-term system stability.

Modular Design for Clean, Efficient Builds

The fully-modular cabling system lets you connect only the cables you need, eliminating clutter inside your case. With included PCIe, CPU, SATA, and peripheral cables, you can create a clean, well-organised build that improves airflow and simplifies maintenance. The 150mm x 160mm x 86mm form factor fits standard ATX cases, while the 2.62kg weight provides a solid, stable foundation for your system components.

Comprehensive Protection and Efficiency

Featuring 80 PLUS Gold certification and 92.8% efficiency, this PSU reduces energy waste and heat generation. The active Power Factor Correction (PFC) maintains a 0.98 power factor, ensuring clean power delivery to your components. Multiple protection features include over current, over power, over voltage, overheating, short circuit, and surge protection, backed by a Mean Time Between Failures (MTBF) rating of 100,000 hours for exceptional long-term reliability.

Box Contents

• be quiet! Pure Power 13 M 850W PSU
• AC power cable
• CPU power cable
• PCIe power cables (PCIe 5.1 + 6+2 pin)
• Peripheral (Molex) cables
• SATA power cables
• Mounting screws
• Cable ties

Check before you buy

• Confirm your case has sufficient clearance for 150mm x 160mm x 86mm PSU dimensions
• Verify your GPU’s power requirements match the 850W total output
• Check if your build needs additional PCIe cables beyond what’s included
• Confirm your power outlet matches the 100-240V AC input range

Frequently Asked Questions

Q: Is this PSU compatible with PCIe 5.0 graphics cards?

A: Yes, it supports both PCIe 5.0 and PCIe 5.1 cards with included cables.

Q: Does the semi-passive mode work at all loads?

A: The fan stays off under low to moderate loads, activating only when needed for cooling.

Q: What efficiency rating does this PSU achieve?

A: It holds 80 PLUS Gold certification with 92.8% efficiency under typical loads.

Q: How many SATA devices can I power with this unit?

A: It includes six SATA power connectors for multiple storage devices.

Q: Is this PSU suitable for overclocking?

A: Yes, the 850W capacity and stable power delivery support moderate to high overclocking scenarios.

The Consultant’s Verdict & Warranty

The be quiet! Pure Power 13 M 850W represents an excellent choice for PC enthusiasts, gamers, and content creators who prioritise silent operation without compromising on power or features. Its ATX 3.1 compliance, PCIe 5.1 support, and fully-modular design make it versatile enough for current builds while preparing you for next-generation hardware upgrades. The combination of whisper-quiet semi-passive cooling, comprehensive protection features, and Gold efficiency creates a reliable foundation for any high-performance system. Covered by the standard Manufacturer Warranty.