be quiet! DARK POWER 14 850W PSU

£173.45 inc VAT

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About This Item

  • 850 W ATX 3.1 power supply with 80 PLUS Titanium certification
  • Active cooling with 13.5 cm fan and FDB bearing technology
  • Four +12V rails delivering 850 W total output power
  • Fully modular cabling for clean build and easy installation
  • Comprehensive protection: over current, over voltage, overheating, overload, short circuit, surge & inrush protection
  • MTBF of 100,000 hours with 93.8% efficiency

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Description

be quiet! Dark Power 14 850W | High-Performance Titanium PSU

The be quiet! Dark Power 14 850W power supply unit delivers uncompromising silence and performance for demanding PC builds. This 850W powerhouse features a high-performance heat sink design with an integrated fan and can operate in either active or semi-passive mode, making it ideal for enthusiasts who require both reliability and near-silent operation.

Key Specifications

Metric Spec
Power Output 850W
Efficiency 93.8% (80 PLUS Titanium)
Fan Type 135mm FDB, 0-2100 RPM
Noise Level 16 dB
Cabling Fully-Modular

Ultimate Efficiency with 80 PLUS Titanium Certification

The Dark Power 14 achieves an impressive 93.8% efficiency rating through its 80 PLUS Titanium certification, meaning less energy is wasted as heat during power conversion. This high efficiency translates directly to lower electricity bills and reduced thermal output, which is particularly beneficial for systems running 24/7 or in environments where heat management is critical. The power factor of 0.98 ensures optimal power delivery to your components.

Advanced Cooling for Silent Operation

Equipped with a 135mm Fluid Dynamic Bearing (FDB) fan, this PSU delivers exceptional cooling while maintaining whisper-quiet operation at just 16 dB. The fan speed ranges from 0 to 2100 RPM and can switch between active and semi-passive modes depending on system load. This intelligent cooling system ensures your components stay at optimal temperatures during intensive tasks while remaining virtually silent during light usage or idle periods.

Comprehensive Protection and Reliability

Built with professional-grade protection features, the Dark Power 14 safeguards your valuable components against electrical anomalies. The unit includes over current, over voltage, overheating, overload, short circuit, surge & inrush protection (SIP), and under voltage protection. With a Mean Time Between Failures (MTBF) of 100,000 hours, this PSU is engineered for long-term reliability in even the most demanding environments.

Flexible Power Delivery for Modern Systems

The Dark Power 14 features four +12V rails with maximum outputs of 30A, 30A, 35A, and 35A respectively, providing balanced power distribution across your system. The ATX 3.1 and EPS 2.92 compatibility ensures full support for the latest Intel and AMD platforms, including high-end processors and graphics cards. The 20+4 pin ATX and 4+4 pin CPU connectors deliver stable power to your motherboard and processor.

Box Contents

  • be quiet! Dark Power 14 850W PSU
  • Fully modular cables
  • Mounting screws
  • Cable ties
  • User manual (multiple languages)

Check before you buy

  • Confirm your case has sufficient space (150mm x 175mm x 86mm)
  • Verify your system’s total power requirements don’t exceed 850W
  • Check that your motherboard uses standard 20+4 pin ATX connector
  • Confirm you need fully-modular cabling for your build

Frequently Asked Questions

Q: Is this PSU compatible with ATX 3.0 and PCIe 5.0 graphics cards?

A: Yes, the Dark Power 14 supports ATX 3.1 specification with PCIe 5.0 readiness.

Q: Can the fan be completely turned off during low loads?

A: Yes, the semi-passive mode allows the fan to stop completely during light usage.

Q: How many SATA devices can I connect to this PSU?

A: The unit provides 13 SATA power connectors across four cables.

Q: What is the hold-up time for this power supply?

A: The hold time is 20.7 milliseconds, providing adequate power during brief interruptions.

Q: Does this PSU include all necessary cables for a typical gaming PC?

A: Yes, it includes motherboard, CPU, PCIe, SATA, and peripheral power cables.

The Consultant’s Verdict & Warranty

The be quiet! Dark Power 14 850W represents the pinnacle of silent, efficient power delivery for high-performance PC builds. Its 80 PLUS Titanium certification, advanced cooling system, and comprehensive protection features make it an excellent choice for gaming rigs, content creation workstations, and professional systems where reliability and low noise are paramount. Covered by the standard Manufacturer Warranty.

Specifications
Cooling
Fan diameter13.5 cm
Number of fans1 fan(s)
Fan speed0 - 2100 RPM
Cooling typeActive
Performance
On/off switchYes
Power supply unit (PSU) form factorATX
80 PLUS certification80 PLUS Titanium
PurposePC
ATX version3.1
EPS version2.92
Noise level16 dB
Mean time between failures (MTBF)100000 h
Bearing technologyFDB
Design
80 PLUS certification80 PLUS Titanium
Product colourBlack
Fan diameter13.5 cm
On/off switchYes
Number of fans1 fan(s)
Fan speed0 - 2100 RPM
Cooling typeActive
On/off fan switchYes
Power
Total power850 W
Maximum input current (@220V)5 A
Peak power950 W
AC input voltage100 - 240 V
AC input frequency50/60 Hz
Power factor0.98
Maximum input current (@110V)10 A
Combined power (+3.3V)120 W
Combined power (+12V)850 W
Combined power (+5V)120 W
Max output current (+3.3V)24 A
Max output current (+12V1)30 A
Max output current (+12V2)30 A
Max output current (+12V4)35 A
Max output current (+12V3)35 A
Max output current (+5V)24 A
Max output current (-12V)0.5 A
Max output current (+5Vsb)3 A
Power protection featuresOver current, Over voltage, Overheating, Overload, Short circuit, Surge & inrush protection (SIP), Under voltage
Hold time20.7 ms
Efficiency93.8%
Number of +12V rail(s)4
Ports & interfaces
Motherboard power cable length60 cm
SATA power cable length600,750,900,1050 mm
Peripheral (Molex) power cable length900,1050 mm
PCI Express power cable length60 cm
CPU power cable length70 cm
Motherboard power connector20+4 pin ATX
Number of SATA power connectors13
Peripheral (Molex) power connectors (4-pin)2
EPS power connector (8-pin)Yes
PCI Express power connectors (6+2 pin)4
CPU power connector (4+4 pin)Yes
PCI Express connectorYes
ATX power connector (20+4 pin)Yes
Cabling typeFully-Modular
EPS power connector (4+4 pin)Yes
PCI Express power connectors (12-pin)1
Number of SATA power cables4
Operational conditions
Operating temperature (T-T)0 - 40 °C
Technical details
Shipping (inner) case width36.8 cm
Shipping (inner) case net weight19.3 kg
Shipping (inner) case length52.8 cm
Shipping (inner) case height26 cm
Products per shipping (inner) case4 pc(s)
Sustainability certificatesENERGY STAR, ErP, Triman
Compliance certificatesCB, Federal Communications Commission (FCC), RoHS, TÜV mark, UKCA, WEEE, cTUVus
Certificates
Waste Electrical and Electronic Equipment (WEEE) complianceYes
Compliance certificatesCB, Federal Communications Commission (FCC), RoHS, TÜV mark, UKCA, WEEE, cTUVus
80 PLUS certification80 PLUS Titanium
Certification
Waste Electrical and Electronic Equipment (WEEE) complianceYes
Weight & dimensions
Width150 mm
Depth175 mm
Height86 mm
Weight2.2 kg
Packaging data
Screws includedYes
Cable ties includedYes
Package depth355 mm
Package width230 mm
Package height126 mm
Package weight3.5 kg
ManualYes
Manual languagesSimplified Chinese, German, English, Spanish, French, Italian, Japanese, Polish, Russian, Thai, Ukrainian
Packaging content
Screws includedYes
Cable ties includedYes
ManualYes
Logistics data
Shipping (inner) case width36.8 cm
Shipping (inner) case net weight19.3 kg
Shipping (inner) case length52.8 cm
Shipping (inner) case height26 cm
Products per shipping (inner) case4 pc(s)
Other features
Screws includedYes
Cable ties includedYes
ManualYes

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