be quiet! Dark Power 12 850 W Review - Titanium Silence 27

be quiet! Dark Power 12 850 W Review - Titanium Silence

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Introduction

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We would like to thank be quiet! for supplying the review sample.


The be quiet! Dark Power 12 line consists of three models with capacities ranging from 750 W to 1000 W. This line is essentially a lower-wattage extension of the flagship Dark Power 12 Pro line, which allows for lower prices. All three members are Titanium-certified by both 80 PLUS and Cybenetics and utilize a fully modular cable design. The OEM is FSP, and the platform uses a cutting-edge design of a bridgeless PFC and full-bridge rectification on the primary side, synchronous rectification, and DC-DC converters for the generation of the minor rails. It has been quite a while since I last encountered a bridgeless PFC, especially in this wattage category. Furthermore, with active rectifiers, energy losses are restricted, which boosts efficiency considerably.

Similar to the Pure Power 11 FM unit I recently evaluated, the Dark Power 12 850 W has multiple +12 V rails, four to be exact. If you don't want to mess with multiple +12 V rails, you can combine them into a powerful +12 V rail over a switch be quiet! calls "overclocking key."

The frameless fan design for enhanced airflow and lower noise output is also used with these non-Pro offerings. General build quality is high, and with the good parts FSP used for the platform, the provided warranty is ten years long. Moreover, all units support Windows Modern Standby, which instantly wakes the system up from sleep if the rest of the hardware is compatible.


All differences between the Dark Power Pro 12, Dark Power 12, and Dark Power 11 lines are depicted in the table above. According to be quiet!, the Pro 12 line uses a fully digital platform, but it is actually only a semi-digital design.

Specifications

be quiet! Dark Power 12 850W
Features & Specifications
Max. DC Output850 W
PFCActive PFC
Efficiency80 PLUS Titanium, Cybenetics Titanium
NoiseCybenetics A+ (15–20 dBA)
ModularYes (fully)
Intel C6/C7 Power State SupportYes
Operating Temperature0–50 °C
ProtectionsOver Voltage Protection
Under Voltage Protection
Over Power Protection
Over Temperature Protection
Over Current Protection
Short Circuit Protection
Cooling135mm fluid dynamic bearing fan (BQ SIW3-13525-HF)
Semi-Passive OperationNo
Dimensions (W x H x D)150 x 85 x 175 mm
Weight2.05 kg (4.52 lb)
ComplianceATX12V v2.53, EPS 2.92
Warranty10 years
Price at Time of Review (excl. VAT)$239.99
be quiet! Dark Power 12 850W
Power Specifications
Rail3.3 V5 V12 V112 V212 V312 V45 VSB-12 V
Max. Power24 A24 A30 A30 A35 A35 A3 A0.5 A
120 W840 W15 W6 W
Total Max. Power850 W
be quiet! Dark Power 12 850W
Power Distribution
12V1ATX, Peripheral
12V2EPS
12V32x PCIe (first column)
12V42x PCIe (second column)
Power distribution is optimal since EPS and PCIe connectors are not mixed.
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