Be Quiet! 850W Dark Power Pro 11 PSU, Semi Modular, Fluid Dynamic Fan, 80+ Platinum, SLI/XFire, OC Key

Be Quiet! 850W Dark Power Pro 11 PSU, Semi Modular, Fluid Dynamic Fan, 80+ Platinum, SLI/XFire, OC Key Click for a larger image (images are for illustrative purposes only)

Be Quiet! Dark Power Pro 11 850W PSU
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 850W model takes that a step further with a power conversion topology that delivers 80PLUS(R) 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(R) 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(R) 3 135mm fan
SilentWings(R) 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
funnel-shaped fan
opening of the PSU case is significant big and allows high airflow intake
850 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
NVIDIA SLI Ready and AMD CrossFireX
certifications allow you to build powerful Multi-GPU systems with confidence
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(R) 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 0.10Watts
- Meets Energy Star 6.0 guidelines
- Fulfills the ErP 2014 guidelines
- Zero Load design supports Intel's Deep Power Down C6 and C7 (Haswell) modes

Virtually Inaudible Operation

- Installed SilentWings(R) 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(R) 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


- Advanced full bridge, LLC, Synchronous Rectifier (SR) and DC-to-DC power conversion circuitry design supports unmatched signal stability and unbeatable power efficiency
- Overclocking key allows you to choose between multi-rail operation with four independent 12V-rails and high-performance single-rail operation
- Premiere-quality Japanese 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 100,000 hours; Full performance during 24/7 operation

Maximum Compatibility and Convenience

- Supports the latest Intel(R) 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 33 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
- Nine PCIe connectors for powerful multi-GPU configurations (NVIDIA SLI and AMD CrossFireX) up to Quad-GPU
- Clearly labeled plugs and clever accessories promote simple installation

Outstanding Service and Support

- 5-year manufacturer's warranty
- Quick support is available via our international hotline, Mondays to Fridays from 9:00am to 5:30pm CET : +49 (0) 40-736 76 86 - 98

-Form Factor
Semi Modular
Be Quiet! Dark Power Pro 11
ATX 12V 2.4 & EPS 12V V2.92
850 W
1 x 4+4pin CPU +12V
1 x 4pin ATX 12V
4 x 4Pin Fan
7 x 4pin Molex
6 x 6+2pin PCI-E Power
1 x 6pin PCI-E Power
2 x FDD Power
8 x SATA Power
-Rail Design
Quad +12V
Overclocking key to switch between multi-rail and single rail operation
-AC Input
AC 100-240 V
Active PFC
-Fan Type
135mm SilentWings 3 fan
-#Hide#Fan Bearing
Fluid / Hydraulic Bearing
dB(A) at 20% load: 10.4
dB(A) at 50% load: 10.4
dB(A) at 100% load: 20.1
-80+ Certification
80+ Platinum
up to 94%
100,000 hours
Over current
Over voltage
Under voltage
Short circuit
Over temperature
Over power
Virtually silent operation
850 Watts of continuous power
Cable management
Overclocking key (switch between quad & single rail)
2.39 kg
193 x 150 x 86 mm
-Package Weight
4.6700 kg
5 Years
More products by BEQUIET
Product Reference
£238.80 Inc VAT
(£199.00 (Outside EU)ex VAT)

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