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Black rectangular ATX power supply with 135 mm fan and modular cable sockets

be quiet!

be quiet! Dark Power 14 850W ATX 3.1 Power Supply BP019US

SKU CH-BM9J-THQ3Y MPN BP019US

An 850 W ATX 3.1 power supply with 80 Plus Titanium efficiency up to 95.6 percent, PCIe 5.1 support and a 135 mm Silent Wings fan offering active or semi-passive cooling

  • ColorBlack
  • TypeATX 3.1
  • Maximum Power850 W
  • Fans1 x 135 mm
  • Main Connector20+4Pin
  • ModularModular

Option Dark Power 14 850W

  • 80 PLUS Titanium certified for up to 95.6% efficiency
  • ATX 3.1 compliant with native PCIe 5.1 12V-2x6 connector
  • Switchable semi-passive mode for silent low-load operation
  • Silent Wings 135 mm fan for virtually inaudible performance
  • Fully modular cables simplify builds and improve airflow

Dark Power 14 850W ATX 3.1 PSU

The be quiet! Dark Power 14 delivers 850 W of continuous power for high-end desktop builds. It meets the ATX 3.1 specification and carries 80 PLUS Titanium certification with up to 95.6 % efficiency. The fully modular design suits enthusiasts who want clean cable routing and reliable energy delivery.

Modular Build with Silent Wings Fan

A 135 mm Silent Wings fan works alongside an aluminium heatsink to support active or semi-passive cooling modes selectable by a button. Full bridge, synchronous rectifier and LLC topology provide stable voltage regulation across loads. Modular connectors include a 20+4 pin main cable, native 12V-2x6 for PCIe 5.1 graphics cards and 6+2 pin PCIe plugs for broader GPU compatibility.

ATX 3.1 and PCIe 5.1 Interface Limits

The ATX 3.1 standard defines the 12V-2x6 connector for up to 600 W per cable, so a single cable can feed modern GPUs without adapters. Titanium efficiency reduces waste heat, allowing the semi-passive mode to stay silent longer under typical loads. The 10 year manufacturer warranty reflects the confidence in component longevity under these electrical limits.

Highlights

  • 80 PLUS Titanium certified for up to 95.6% efficiency
  • ATX 3.1 compliant with native PCIe 5.1 12V-2x6 connector
  • Switchable semi-passive mode for silent low-load operation
  • Silent Wings 135 mm fan for virtually inaudible performance
  • Fully modular cables simplify builds and improve airflow

Specifications

Brandbe quiet
SeriesDark Power 14
ModelDark Power 14 | 850 W
Part Number4260052192047
ColorBlack
TypeATX 3.1
Maximum Power850 W
Fans1 x 135 mm
Main Connector20+4Pin
ModularModular
Dimensions17.5 x 15 x 8.6cm
Weight2.2kg
Shipping weight4.42 kg
Package size356 × 235 × 127 mm

Other versions of this model

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Questions about this item

What does the ATX 3.1 standard mean for the 12V-2x6 connector on this 850W unit?

The ATX 3.1 design includes a native 12V-2x6 connector that delivers up to 600W to a PCIe 5.1 graphics card without an adapter, while the 850W total capacity leaves headroom for the rest of the system.

Will the 17.5 x 15 x 8.6cm case and 2.2kg weight fit a standard ATX tower?

The dimensions match the ATX form factor, so the unit fits any case with a standard PSU bay; allow clearance for the 135mm fan and modular cable plugs at the rear.

How do I switch between active and semi-passive cooling, and what is the common mistake?

Press the button on the PSU rear to toggle modes; the mistake is forgetting to verify the LED indicator matches the desired mode before closing the case.

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