Power outages and noisy fans can ruin a gaming session or a creative workflow. The be quiet! Pure Power 12 M, 850W, 100 - 240 V, 50 - 60 Hz, 12 / 6 A, Power Supply is a high-efficiency, fully-modular power supply that keeps your PC stable and whisper-quiet, letting you focus on what matters.
Usages of a 850W Power Supply
A reliable power source fits into many daily setups:
- Building a high-end gaming rig with the latest PCIe 5.0 graphics card.
- Upgrading a workstation for video editing or 3D rendering.
- Powering a multi-GPU mining rig that demands steady current.
- Supplying a quiet home theatre PC for uninterrupted movie nights.
- Replacing an aging PSU in a compact mini-ITX build.
be quiet! Power Supply
If you’re assembling a powerful system, you know that an unstable or noisy PSU can cause crashes, overheating, and wasted electricity. Many builders struggle to find a unit that delivers enough wattage for top-tier components while staying cool and silent. This 850W power supply meets those needs with ATX 3.0 compliance, advanced voltage regulation, and a temperature-controlled fan, making it a perfect match for demanding builds and future-proof upgrades.
Key Features of a 850W Power Supply
- 80 PLUS Gold certification: 93.2% efficiency. Saves energy and reduces heat.
- ATX 3.0 compliance: Supports the latest motherboards and CPUs.
- PCIe 5.0 ready: Includes native 12VHPWR connector for next-gen GPUs.
- Dual 12 V rails: Handles transient loads up to double the rated power.
- Fully-modular cabling: Only the cables you need, improving airflow and tidiness.
- 12 cm be quiet! fan: Temperature-controlled for optimal cooling and low noise.
- Active PFC: Power factor of 0.98 for stable power delivery.
- MTBF of 100 000 h: Long lifespan reduces replacement frequency.
- Noise level: 9.4 dB in silent mode, 25.7 dB at full load. Keeps your room quiet.
- Dimensions: 86 mm × 150 mm × 160 mm, fits standard ATX cases.
Benefits of be quiet! Power Supply
You’ll enjoy lower electricity bills thanks to the high efficiency, while the quiet fan ensures a peaceful environment for work or play. The fully-modular design speeds up cable management, giving you better airflow and cooler component temperatures. With robust protection features, your expensive hardware stays safe from spikes and overloads, and the future-proof connectors mean you won’t need to replace the PSU when you upgrade to newer graphics cards.
Specifications
| Power |
| Power protection features |
Over current, Over power, Over voltage, Overheating, Short circuit |
| Efficiency |
93.2% |
| Power Good signal delay range |
100 - 150 ms |
| Max output current (+5Vsb) |
3 A |
| Max output current (-12V) |
0.3 A |
| Max output current (+5V) |
22 A |
| Max output current (+12V2) |
36 A |
| Max output current (+12V1) |
40 A |
| Max output current (+12V) |
70.9 A |
| Max output current (+3.3V) |
22 A |
| Combined power (+5Vsb) |
15 W |
| Combined power (-12V) |
3.6 W |
| Combined power (+5V) |
120 W |
| Combined power (+12V) |
850 W |
| Combined power (+3.3V) |
120 W |
| Power Factor Correction (PFC) type |
Active |
| Power factor |
0.98 |
| Input current |
12 / 6 A |
| AC input frequency |
50 - 60 Hz |
| AC input voltage |
100 - 240 V |
| Peak power |
900 W |
| Total power |
850 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| PCI Express connector |
Yes |
| ATX power connector (20+4 pin) |
Yes |
| PCI Express power connectors (6+2 pin) |
4 |
| EPS power connector (4+4 pin) |
Yes |
| EPS power connector (8-pin) |
Yes |
| Peripheral (Molex) power cable length |
550 mm |
| Peripheral (Molex) power connectors (4-pin) |
1 |
| SATA power cable length |
500,600,650,800,950 mm |
| Number of PATA power connectors |
2 |
| Number of SATA power connectors |
6 |
| Motherboard power cable length |
55 cm |
| Motherboard power connector |
20+4 pin ATX |
| Performance |
| Mean time between failures (MTBF) |
100000 h |
| Noise level |
25.7 dB |
| EPS version |
2.92 |
| ATX version |
3.0 |
| 80 PLUS certification |
80 PLUS Gold |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC |
| Design |
| On/off switch |
Yes |
| Fan location |
Top |
| Number of fans |
1 fan(s) |
| Fan diameter |
12 cm |
| Cooling type |
Active |
| Product colour |
Black |
| Operational conditions |
| Operating temperature (T-T) |
0 - 40 °C |
| Operating temperature (T-T) |
0 - 40 °C |
| Certificates |
| Compliance certificates |
RoHS |
| Packaging content |
| Cables included |
PATA, PCIe, Peripheral (Molex), SATA |
| Weight & dimensions |
| Height |
86 mm |
| Depth |
150 mm |
| Width |
160 mm |
| Packaging data |
| Package type |
Box |
| Technical details |
| Sustainability compliance |
Yes |
| Sustainability certificates |
ENERGY STAR, ErP |
| Other features |
| Noise level (full-load mode, 100%) |
25.7 dB |
| Noise level (quiet mode, 50%) |
9.5 dB |
| Noise level (silent mode, <30%) |
9.4 dB |
| Cable ties included |
Yes |
| Number of screws |
5 |
| Screws included |
Yes |
