be quiet! PURE POWER 850W PSU
£86.23 inc VAT
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About This Item
- 850W ATX 3.1 gold-rated PSU with PCIe 5.1 & 6+2 cables
- Active cooling with 12 cm fan and rifle bearing for quiet operation
- 90.5% efficiency, 100,000-hour MTBF, and 10-year warranty
- Non-modular design with 20+4 pin ATX, 6 SATA, and 4+4 CPU connectors
- Comprehensive protection: over current, voltage, power, overheating, short circuit
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be quiet! PURE POWER 12 850W | ATX 3.1 Gold Power Supply
The be quiet! PURE POWER 12 850W delivers ATX 3.1 compliance and PCIe 5.1 compatibility in a silent, reliable package. This 850W PSU is designed for high-performance PC builds requiring stable power delivery, exceptional quiet operation, and future-proof connectivity.
Key Specifications
| Metric | Spec |
|---|---|
| Power Output | 850W |
| Efficiency | 80 PLUS Gold |
| ATX Standard | 3.1 |
| PCIe Compatibility | 5.1 |
| Fan Size | 12cm Rifle Bearing |
| Noise Level | 25.1 dB |
Why Choose This PSU?
This power supply unit offers remarkable convenience with both PCIe 5.1 and PCIe 6+2 cables included. The 100,000-hour MTBF rating ensures long-term reliability, while the 90.5% efficiency rating helps reduce energy costs. Active PFC and comprehensive protection features (over current, over power, over voltage, overheating, short circuit, surge & inrush protection, under voltage) safeguard your components.
Built for High-Performance Systems
The 850W continuous output with 900W peak power handles demanding gaming rigs and content creation workstations. Single +12V rail design delivers consistent power to graphics cards and processors. ATX 3.1 compliance means better compatibility with modern components, including next-generation PCIe 5.0 devices. The non-modular cabling keeps costs down while maintaining clean internal airflow.
Silent Operation Technology
Rifle bearing fan technology provides quiet cooling without sacrificing performance. The 25.1 dB noise level ensures near-silent operation during typical loads. Intelligent fan control adjusts speed based on temperature, keeping your system cool under heavy workloads while maintaining whisper-quiet operation during light use.
Installation & Compatibility
Standard ATX form factor (86mm × 160mm × 150mm) fits most PC cases. The 20+4 pin ATX and 4+4 pin CPU connectors support modern motherboards. Six SATA connectors and three PCIe 6+2 connectors handle multiple drives and graphics cards. 55cm motherboard cable and 60cm PCIe/CPU cables provide adequate reach for most builds.
Box Contents
- be quiet! PURE POWER 12 850W PSU
- PCIe 5.1 cable
- PCIe 6+2 cables
- AC power cable
- Mounting screws
- Cable ties
Check Before You Buy
- Confirm your case supports ATX power supply dimensions
| Cooling | |
|---|---|
| Fan diameter | 12 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 Gold |
| Purpose | PC |
| ATX version | 3.1 |
| EPS version | 2.92 |
| Noise level | 25.1 dB |
| Mean time between failures (MTBF) | 100000 h |
| Bearing technology | Rifle |
| Design | |
| 80 PLUS certification | 80 PLUS Gold |
| Product colour | Black |
| Fan diameter | 12 cm |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Power | |
| Total power | 850 W |
| Maximum input current (@220V) | 6 A |
| Peak power | 900 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50/60 Hz |
| Power factor | 0.98 |
| Power Factor Correction (PFC) type | Active |
| Maximum input current (@110V) | 12 A |
| Combined power (+3.3V) | 120 W |
| Combined power (+12V) | 850 W |
| Combined power (+5V) | 120 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 22 A |
| Max output current (+12V1) | 70.9 A |
| Max output current (+5V) | 22 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Surge & inrush protection (SIP), Under voltage |
| Hold time | 17.34 ms |
| Efficiency | 90.5% |
| Number of +12V rail(s) | 1 |
| Ports & interfaces | |
| Motherboard power cable length | 55 cm |
| SATA power cable length | 500,650,800,950 mm |
| Peripheral (Molex) power cable length | 800 mm |
| PCI Express power cable length | 60 cm |
| CPU power cable length | 60 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 6 |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| PCI Express power connectors (6+2 pin) | 3 |
| CPU power connector (4+4 pin) | Yes |
| Cabling type | Non-Modular |
| PCI Express power connectors (12-pin) | 1 |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 40 °C |
| Storage temperature (T-T) | -20 - 70 °C |
| Operating relative humidity (H-H) | 0 - 90% |
| Storage relative humidity (H-H) | 0 - 95% |
| Technical details | |
| Shipping (inner) case width | 24 cm |
| Shipping (inner) case net weight | 13.4 kg |
| Shipping (inner) case length | 56 cm |
| Shipping (inner) case height | 34 cm |
| Products per shipping (inner) case | 4 pc(s) |
| Sustainability certificates | ENERGY STAR, ErP, Triman |
| Warranty period | 10 year(s) |
| Compliance certificates | CB, CE, Federal Communications Commission (FCC), RoHS, UKCA, WEEE, cTUVus |
| Packaging content | |
| Cables included | AC |
| Cable tie(s) included | Yes |
| Screws included | Yes |
| Weight & dimensions | |
| Width | 86 mm |
| Depth | 160 mm |
| Height | 150 mm |
| Weight | 2.7 kg |
| Packaging data | |
| Cables included | AC |
| Screws included | Yes |
| Package depth | 320 mm |
| Package width | 133 mm |
| Package height | 210 mm |
| Package weight | 3.1 kg |
| Certificates | |
| 80 PLUS certification | 80 PLUS Gold |
| Logistics data | |
| Shipping (inner) case width | 24 cm |
| Shipping (inner) case net weight | 13.4 kg |
| Shipping (inner) case length | 56 cm |
| Shipping (inner) case height | 34 cm |
| Products per shipping (inner) case | 4 pc(s) |
| Other features | |
| Screws included | Yes |
| Identifiers | |
| Distributor SKUs | PSBEQ-BP004EU, 548274, STD10220409, 1999491 |
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