Be quiet! POWER ZONE 850W PSU
£106.20 inc VAT
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About This Item
- 850W ATX 3.1 power supply with 80 PLUS Platinum certification
- 14 cm Pure Wings 3 fan with semi-passive zero-RPM cooling
- 92.3% efficiency and 100,000-hour MTBF for reliable performance
- Fully-modular cabling with 7 SATA and 3 PCIe 6+2-pin connectors
- Native 12V-2×6 connector for next-gen PCIe 5.1 graphics cards
- Peak power of 920W for handling transient loads
- Black design with mesh front and printed cable designations
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be quiet! POWER ZONE 2 850W | Platinum Efficiency PSU
The be quiet! POWER ZONE 2 850W power supply unit 20+4 pin ATX ATX Black delivers exceptional efficiency and silent operation for high-performance gaming and content creation systems. With 80 PLUS Platinum certification and semi-passive cooling, this PSU provides reliable power delivery while maintaining whisper-quiet operation under typical loads.
Slim Specs Table
| Metric | Spec |
|---|---|
| Total Power | 850W |
| Efficiency | 92.3% (80 PLUS Platinum) |
| Cooling | Pure Wings 3 140mm fan, semi-passive |
| ATX Version | 3.1 |
| Rails | Single 12V rail |
Platinum Certified Efficiency
The be quiet! POWER ZONE 2 850W power supply unit 20+4 pin ATX ATX Black achieves up to 94.1% efficiency through its 80 PLUS Platinum and Cybenetics Platinum certifications. This exceptional efficiency translates to lower energy consumption, reduced heat output, and quieter operation compared to standard PSUs. The single 12V rail delivers 849.6W of combined power, providing stable voltage for demanding components.
Semi-Passive Zero-RPM Cooling
Experience true silence with the innovative semi-passive cooling system. The Pure Wings 3 140mm fan remains completely off during light loads, activating only when necessary for demanding tasks. This zero-RPM mode eliminates fan noise during everyday computing, while the large fan diameter ensures efficient cooling when active. A 2-5 minute cooldown period prevents frequent start-stop cycles, maintaining quiet operation throughout your system’s lifecycle.
Future-Proof PCIe 5.1 Ready
The be quiet! POWER ZONE 2 850W power supply unit 20+4 pin ATX ATX Black comes equipped with native 12V-2×6 connector support for next-generation PCIe 5.1 graphics cards. The included 90° angled 12V-2×6 cable ensures compatibility with the latest GPUs while maintaining clean cable management. Additionally, three PCIe 6+2-pin connectors support current-generation graphics cards, making this PSU versatile for both today’s and tomorrow’s hardware.
Massive Transient Power Handling
Built to handle extreme power demands, this PSU delivers 850W continuous power with the ability to manage transient loads up to 1700W. The robust LLC topology and comprehensive protection features (over current, over power, over voltage, overheating, short circuit, surge & inrush, under voltage) ensure stable operation even when graphics cards demand sudden power spikes. This makes it ideal for overclocking and high-end gaming configurations.
Premium Build Quality & Design
Beyond performance, the be quiet! POWER ZONE 2 850W power supply unit 20+4 pin ATX ATX Black features a distinctive mesh front panel and fully modular cabling for superior aesthetics and airflow. Cable designations printed directly on the PSU case simplify installation and upgrades. The compact ATX form factor (150 x 160 x 86mm) fits standard cases while delivering enthusiast-grade power delivery.
Box contents
- be quiet! POWER ZONE 2 850W power supply unit
- 90° angled 12V-2×6 PCIe 5.1 cable
- Modular cables (fully modular design)
- Mounting screws
- Cable ties
- User manual (English, German, Spanish, French, Polish, Russian, Ukrainian)
Check before you buy
- Confirm your case has sufficient clearance for ATX PSU dimensions
- Verify your graphics card requires PCIe 5.1 connectivity (optional)
- Check total system power requirements match 850W capacity
- Ensure your motherboard has standard 20+4 pin ATX connector
Frequently Asked Questions
Q: Is this PSU compatible with PCIe 5.0 graphics cards?
A: Yes, it includes both native 12V-2×6 connector for PCIe 5.1 and three PCIe 6+2-pin connectors for PCIe 4.0/5.0 cards.
Q: How quiet is the semi-passive cooling?
A: The fan remains completely off under light loads, with noise levels reaching only 24.9 dB when active.
Q: What protection features are included?
A: Over current, over power, over voltage, overheating, short circuit, surge & inrush, and under voltage protection.
Q: Is the cabling modular?
A: Yes, it features fully modular cabling for clean installation and optimal airflow.
Q: What efficiency certification does it have?
A: 80 PLUS Platinum certification with up to 94.1% efficiency.
The Consultant’s verdict & warranty
The be quiet! POWER ZONE 2 850W power supply unit 20+4 pin ATX ATX Black represents an excellent choice for gamers, content creators, and PC enthusiasts seeking premium efficiency, silent operation, and future-proof connectivity. Its combination of 80 PLUS Platinum efficiency, semi-passive cooling, and PCIe 5.1 readiness makes it suitable for high-end systems where both performance and acoustics matter. Covered by the standard Manufacturer Warranty.
| Cooling | |
|---|---|
| Fan diameter | 14 cm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Performance | |
| On/off switch | Yes |
| Power supply unit (PSU) form factor | ATX |
| 80 PLUS certification | 80 PLUS Platinum |
| Purpose | PC |
| ATX version | 3.1 |
| EPS version | 2.92 |
| Noise level | 24.9 dB |
| Mean time between failures (MTBF) | 100000 h |
| Bearing technology | Rifle |
| Design | |
| 80 PLUS certification | 80 PLUS Platinum |
| Product colour | Black |
| Fan diameter | 14 cm |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Power | |
| Total power | 850 W |
| Maximum input current (@220V) | 5 A |
| Peak power | 920 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50/60 Hz |
| Power factor | 0.98 |
| Maximum input current (@110V) | 10 A |
| Combined power (+3.3V) | 120 W |
| Combined power (+12V) | 849.6 W |
| Combined power (+5V) | 120 W |
| Combined power (-12V) | 6 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 70.8 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.5 A |
| Max output current (+5Vsb) | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Surge & inrush, Under voltage |
| Hold time | 21.1 ms |
| Efficiency | 92.3% |
| Number of +12V rail(s) | 1 |
| Ports & interfaces | |
| Motherboard power cable length | 60 cm |
| SATA power cable length | 550,700,850,1000 mm |
| Peripheral (Molex) power cable length | 1000 mm |
| PCI Express power cable length | 60 cm |
| CPU power cable length | 70 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 7 |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| EPS power connector (8-pin) | Yes |
| PCI Express power connectors (6+2 pin) | 3 |
| CPU P4 connector (4-pin) | 1 |
| CPU power connector (4+4 pin) | Yes |
| Cabling type | Fully-Modular |
| PCI Express power connectors (16-pin) | 1 |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 40 °C |
| Storage temperature (T-T) | -40 - 70 °C |
| Operating relative humidity (H-H) | 0 - 85% |
| Storage relative humidity (H-H) | 0 - 95% |
| Technical details | |
| Shipping (inner) case width | 28.2 cm |
| Shipping (inner) case length | 65.1 cm |
| Shipping (inner) case height | 34.6 cm |
| Products per shipping (inner) case | 6 pc(s) |
| Sustainability certificates | ENERGY STAR, ErP, Triman |
| Compliance certificates | BSMI, CB, CCC, CE, Federal Communications Commission (FCC), RCM, RoHS, TÜV mark, UKCA, WEEE |
| Certificates | |
| Waste Electrical and Electronic Equipment (WEEE) compliance | Yes |
| Compliance certificates | BSMI, CB, CCC, CE, Federal Communications Commission (FCC), RCM, RoHS, TÜV mark, UKCA, WEEE |
| 80 PLUS certification | 80 PLUS Platinum |
| Certification | |
| Waste Electrical and Electronic Equipment (WEEE) compliance | Yes |
| Weight & dimensions | |
| Width | 150 mm |
| Depth | 160 mm |
| Height | 86 mm |
| Packaging data | |
| Screws included | Yes |
| Cable ties included | Yes |
| Package depth | 328 mm |
| Package width | 248 mm |
| Package height | 102 mm |
| Package type | Box |
| Package weight | 3.21 kg |
| Manual | Yes |
| Manual languages | German, English, Spanish, French, Polish, Russian, Ukrainian |
| Packaging content | |
| Screws included | Yes |
| Cable ties included | Yes |
| Manual | Yes |
| Logistics data | |
| Shipping (inner) case width | 28.2 cm |
| Shipping (inner) case length | 65.1 cm |
| Shipping (inner) case height | 34.6 cm |
| Products per shipping (inner) case | 6 pc(s) |
| Shipping (inner) case gross weight | 19.3 kg |
| Other features | |
| Screws included | Yes |
| Cable ties included | Yes |
| Manual | Yes |
| Identifiers | |
| Distributor SKUs | PSBEQ-BP007, 554440 |
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