Be quiet! POWER ZONE 2 850W
Be quiet! POWER ZONE 2 850W
The Be quiet! POWER ZONE 2 850W PC power supply is designed for gaming and workstations that require 850W of power. This ATX 3.1 format PSU uses LLC + SR + DC/DC topology for voltage regulation and meets the 80 PLUS Platinum certification criteria with an efficiency of up to 94.1%. This reduces energy loss and waste heat generation. Fully modular cable management simplifies organisation inside the case and promotes airflow, which is crucial for cooling components.
850W
Power
ATX
Format
80 PLUS Platinum
Certification
Fully
Modularity
Key technologies of the Be quiet! POWER ZONE 2 850W PC power supply
- 850W output for powering high-performance builds
- 80 PLUS Platinum certification for high energy efficiency
- Low-noise operation with the Pure Wings 3 fan
- Zero RPM mode keeps the fan off under low load
- 12V-2x6 connector powers PCIe 5.1 standard graphics cards
- LLC + SR + DC/DC topology maintains stable voltage
Choosing a power supply
When choosing a suitable PC power supply, the key parameter, besides the format, is its power output. This indicates the maximum number of watts the power supply can continuously deliver to the components in the computer. It is a good idea to use an online calculator to determine the optimal power based on your chosen components.
High efficiency and fan speed control
The power supply meets the 80 PLUS Platinum certification criteria, which indicates its efficiency in converting electrical energy. At 50% load, it achieves an efficiency of up to 94.1%, resulting in lower electricity consumption and less waste heat generation. Lower thermal losses reduce the cooling demands on the entire system and contribute to a longer lifespan for connected components. The PSU operates in a semi-passive Zero RPM mode, where the fan remains off under low to medium loads, such as during normal work or multimedia playback. The control unit only activates the fan once a certain load level is exceeded. After the load decreases, the fan continues to spin for another 2 to 5 minutes, which cools the components and limits frequent on/off cycles.
Cooling and support for ATX 3.1 and PCIe 5.1
A 140mm Pure Wings 3 fan takes care of dissipating residual heat. It uses a rifle bearing and a 4-pole motor, which contribute to a long lifespan and low operating noise. At high speeds of 2100rpm, it reaches a noise level of up to 24.9dB(A) at full load. Full support for ATX 3.1 and PCIe 5.1 standards enables the powering of high-performance graphics cards and processors. The ATX 3.1 specification includes the ability to handle short-term power spikes. For powering graphics cards, a 12V-2x6 connector is available, which can deliver up to 600W. A 90-degree version is also included in the package for easier installation and cable routing in cases with limited space.
Advanced topology and modular cable management
The internal layout uses LLC topology with a synchronous rectifier (SR) and DC/DC converters to generate the secondary voltage rails. This combination of technologies provides stable and precisely regulated voltage with minimal ripple. Precise voltage regulation is important for the stability and reliability of sensitive components like modern processors and graphics cards, even during sudden load changes. A fully modular cable management system means that all cables can be disconnected from the PSU body. This lets you connect only the cables needed for your specific components, simplifying installation and cable organisation.
Comprehensive set of protections
The power supply's electronics are equipped with a set of seven safety mechanisms that protect the connected components from damage. These include over-voltage and under-voltage protection, over-current protection, and overload protection. It also features short-circuit, over-temperature, and inrush current protection. This suite of protections ensures the safe operation of the entire computer build.
Connectors
- 1× ATX 24-pin
- 2× CPU 8-pin (4+4)
- 3× PCI-E 8-pin (6+2)
- 1× PCI-E 16-pin
- 7× SATA 15-pin
- 1× Molex 4-pin
Package contents
- PC power supply
- Set of mounting screws
- User manual
- 1× Power cable
- 1× ATX 24-pin
- 1× CPU 4+4-pin
- 1× CPU 8-pin
- 1× PCI-E 16-pin
- 3× PCI-E 6+2-pin
- 1× SATA
- 1× SATA / PATA
80 Plus certification in the European market
The 80 Plus certification was created to objectively assess the efficiency of computer power supplies. This gives users a simple and clear way to compare different models. In the European market (where 230V is used), there are six levels of 80 Plus certification with set requirements for computer power supplies. Higher energy efficiency primarily means lower energy consumption.
| PC power supply load | Efficiency at 20% load | Efficiency at 50% load | Efficiency at 100% load |
|---|---|---|---|
| 80 PLUS | 82 % | 85 % | 82 % |
| 80 PLUS Bronze | 85 % | 88 % | 85 % |
| 80 PLUS Silver | 87 % | 90 % | 87 % |
| 80 PLUS Gold | 90 % | 92 % | 89 % |
| 80 PLUS Platinum | 92 % | 94 % | 90 % |
| 80 PLUS Titanium | 94 % | 96 % | 94 % |
Specifications
Performance and format
Equipment
Efficiency
Connectors
Cooling system
Dimensions
| Code: | BNpz2a5 |
| Warranty: | 120 months |
| Links: | Producer's Website: |
| Manufacturer information |
Listan GmbH, Wilhelm-Bergner-Str. 11, 21509 Glinde, Germany [email protected] 
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