When your PC draws more power than a cheap unit can handle, crashes and noise become daily frustrations. The be quiet! Pure Power 12 M, 850W, 100 - 240 V, 50 - 60 Hz, 12 / 6 A, Power Supply delivers reliable, silent electricity for high-end builds, keeping components cool while your system stays stable and whisper-quiet.
Benefits of be quiet! Power Supply
- Lower electricity bill: 80 PLUS Gold efficiency up to 93.2 % reduces power waste.
- Quiet operation: temperature-controlled fan keeps noise under 10 dB at half load.
- Future-proof: ATX 3.0 compliance and native 12VHPWR connector support next-gen GPUs.
- Safer system: comprehensive protection against over-current, over-voltage and short circuits.
- Easy cable management: fully-modular design lets you use only the cables you need.
be quiet! Power Supply Overview
With this unit you’ll notice a smoother, cooler workflow. The single 120 mm fan adjusts speed to match load, so your case stays quiet even during intense gaming or rendering sessions. Dual 12 V rails handle sudden power spikes, giving you confidence that even the most demanding graphics cards will run without hiccups. The solid build and active PFC also mean lower heat and longer component life.
Usages of a 850W Power Supply
A 850W capacity is perfect for high-performance gaming rigs, workstation PCs, and systems that combine multiple GPUs or high-end CPUs. It also suits creators who need reliable power for demanding software and for future upgrades that may push power demands higher.
Key Features of a 850W Power Supply
- Efficiency: 93.2 %. Exceptional conversion means less waste heat and lower energy costs.
- Power factor: 0.98. Near-perfect alignment with the grid improves overall efficiency.
- MTBF: 100 000 h. Designed for long-term reliability, reducing the need for replacements.
- Noise level (full load): 25.7 dB. Keeps your workspace quiet even at maximum output.
- Noise level (quiet mode): 9.5 dB. Near-silence for everyday use.
- Dimensions (HxWxD): 86 mm × 160 mm × 150 mm. Fits standard ATX cases without space issues.
- Connectors: 4 × 6+2 pin PCIe, 2 × 8-pin EPS, 20+4 pin ATX. Provides ample connections for modern builds.
- Modular cables: Fully-modular. Allows a tidy interior and better airflow.
- Certification: 80 PLUS Gold, RoHS, ENERGY STAR. Confirms high efficiency and environmental compliance.
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 |
