be quiet! Dark Power Pro 11 550W ATX 12V 80 Plus Platinum Power Supply – (Silent Wings 3 Fan) | BN250


Dark Power Pro 11 550W

Legendary Silence, Cutting Edge Performance
It is a fact of the modern world that high technology requires constant refinement and unending improvement — and that is even truer for those who would be leaders. Dark Power Pro power supplies are renowned as the world’s quietest and most efficient high-performance PSUs. The Dark Power Pro 11 550W model takes that a step further with a power conversion topology that delivers 80PLUS® Platinum performance, add to that an unparalleled array of enhancements that augment this unit’s compatibility, convenience of use, reliability, and safety, and the result is the most technologically-advanced power supply be quiet! has ever built.

80PLUS Platinum certification and up to 94% power conversion efficiency
Virtually inaudible operation thanks to a broad array of optimizations, including the use of a be quiet! SilentWings 3 135mm fan
SilentWings 3 fan features an advanced fan frame, an airflow-optimized fan blade, fluid-dynamic bearing with copper core and a high-quality 6-pole motor for less vibration
The funnel-shaped fan opening of the PSU case is significant big and allows high airflow intake
550 Watts of continuous power provide intensive power reserves for demanding computing applications
Overclocking key allows switchover between quadruple independent 12V-rail mode and high-performance single-rail operation
Cable management with extra long cable reach simplifies component installation and reduces annoying clutter, increasing airflow and improving cooling in even the largest PC cases
Product conception, design and quality control in Germany


Advanced, high-resolution gaming and multimedia systems
Overclocked systems
Multi-GPU workstations for 3D graphics, photo editing, video editing
Any application that requires high power with superior quietness

Energy Efficiency

80PLUS Platinum certification with up to 94% efficiency
Saving power means saving money, but it also mean less waste heat, less cooling required, and overall quieter operation
Standby drain less than 0.13Watts
Meets Energy Star 6.0 guidelines
Fulfills the ErP 2014 guidelines
Zero Load design supports Intel’s Deep Power Down C6 and C7 modes

Virtually Inaudible Operation

Installed SilentWings 3 135mm fan includes a wide array of electronic and mechanical optimizations for best-of-class airflow with very low noise production, including:

Unique airflow-optimized fan blade design reduces noise-generating fan turbulence
Advanced fluid dynamic bearing with copper core provides for greatly reduced operating noise and super-long life
6-pole fan motor smoothes operation even at very low speeds
High quality IC motor controller reduces electrical noise

PSU case has a large funnel-shaped fan opening that facilitates high airflow intake
SilentWings® 3 fan is decoupled from the PSU body with special rubberized ring mount, reducing transmission of vibration and noise
Dual-layer PSU housing with rubberized sleeve isolates your chassis from PSU noise and vibration, further enhancing silence
Optimized PSU airflow generates superior cooling at lower fan speeds, reducing turbulence and allowing even quieter operation
Variable fan speed is optimally governed to strike the best balance between proper cooling and deep quietness
Up to four case fans can be connected to, and regulated by the PSU, thus reducing overall system noise even further


Unmatched signal stability and unbeatable power efficiency thanks to advanced half bridge, LLC, Synchronous Rectifier (SR) and DC-to-DC power conversion circuitry design
Overclocking key allows you to choose between multi-rail operation with four independent 12V-rails and high-performance single-rail operation
Premiere-quality capacitors rated to 105°C for maximum reliability and operating life
Increased output of 12V capacitors to minimize feedback sounds of graphics cards
Top protection for components against over-currents, over- and under-voltages, short circuits, overheating, overloads and voltage surges on input side
Long service life up to 180,000 hours
Full performance during 24/7 operation

Maximum Compatibility and Convenience

Supports the latest Intel and AMD™ processors
Compatible with ATX12V 2.4 and EPS12V 2.92 standards
Professional modular cable management system with removable cable bundles simplifies component installation, reduces annoying clutter, increases airflow and allows for improved cooling
Cable management with 2x P8 connector for better voltage stability for the CPU
System supports up to 32 connectors for massive system builds
Connectors are compatible with older components as well as those still on the drawing board
Sleeved cable lengths up to 120cm are perfect for large PC cases and allow for improved cooling in any size case
Individual P4 and P8 plugs support all common mainboard types
Five PCIe connectors for powerful multi-GPU configurations
Clearly labeled plugs and clever accessories promote simple installation

10 in stock

SKU: BN250 Categories: ,

Additional information

Weight 2.02 kg
Dimensions 150 × 150 × 10 cm

be quiet!

Model No.

BN250 / #21304


2.02 Kg


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