Tired of noisy, inefficient power units that waste electricity and limit your system’s performance? The be quiet! (BN337), 850 W, 100 - 240 V, 50/60 Hz, 10/5 A, Power Supply delivers reliable, whisper-quiet power for high-end PCs, keeping your components cool while cutting your energy bill.
Why Choose be quiet! Power Supply
Many buyers worry about choosing a PSU that can handle future-proof components without excessive heat or noise. You may also fear over-specifying and paying for unused capacity. This power supply removes those doubts with its 80 PLUS Platinum rating, a single massive 12 V rail that tolerates short-term spikes, and a Silent Wings fan that operates at barely audible levels. It meets ATX 3.0 standards, so you get the latest connectors for PCIe 5.0 GPUs and full modular cabling for a tidy build.
Key Features of a 850 W Power Supply
- Efficiency: 92.3 %. High efficiency means less wasted power and lower electricity costs.
- Power factor: 0.99. Near-perfect power usage reduces strain on your mains supply.
- Noise level: 22.1 dB. The Silent Wings fan keeps the system quiet even under load.
- Dimensions: 86 mm × 150 mm × 160 mm. Fits standard ATX cases without space issues.
- Weight: 1.81 kg. Light enough for easy installation yet solidly built.
- Input voltage: 100 - 240 V, 50/60 Hz. Works worldwide without a voltage converter.
- Connectors: 1 × 16-pin, 4 × 6+2-pin PCIe, dual EPS 4+4 pin and 8-pin. Supports current and next-gen graphics cards.
- Modular cables: Up to 100 cm sleeved cables, fully modular for clean airflow and easy upgrades.
Usages of a 850 W Power Supply
Ideal for gamers building a rig with the latest RTX 40-series GPU, content creators running multiple monitors and storage drives, and workstation users needing stable power for demanding CPUs and expansion cards. Its high wattage and ATX 3.0 compliance also suit future upgrades, ensuring the unit remains useful as components evolve.
Benefits of be quiet! Power Supply
- Quiet operation: Whisper-low fan noise lets you focus on work or play.
- Energy savings: Platinum efficiency cuts your electricity bill.
- Reliability: Japanese 105 °C capacitors and 100 000 h MTBF promise long-term stability.
- Future-proof: Native 12VHPWR and modular design handle next-gen hardware.
- Clean build: Fully modular, sleeved cables reduce clutter and improve airflow.
Specifications
| Power |
| Power protection features |
Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Efficiency |
92.3% |
| Hold time |
19.2 ms |
| Max output current (+5Vsb) |
3 A |
| Max output current (-12V) |
0.5 A |
| Max output current (+5V) |
25 A |
| Max output current (+12V1) |
70.8 A |
| Max output current (+3.3V) |
25 A |
| Combined power (+5V) |
150 W |
| Combined power (+12V) |
849.6 W |
| Combined power (+3.3V) |
150 W |
| Power factor |
0.99 |
| Input current |
10/5 A |
| AC input frequency |
50/60 Hz |
| AC input voltage |
100 - 240 V |
| Peak power |
920 W |
| Total power |
850 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| CPU power cable length |
70 cm |
| PCI Express power cable length |
60 cm |
| PCI Express power connectors (16-pin) |
1 |
| 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 |
1000,850 mm |
| Peripheral (Molex) power connectors (4-pin) |
0 |
| SATA power cable length |
550,700,850,1000 mm |
| Number of PATA power connectors |
2 |
| Number of SATA power connectors |
9 |
| Motherboard power cable length |
60 cm |
| Motherboard power connector |
20+4 pin ATX |
| Performance |
| Mean time between failures (MTBF) |
100000 h |
| Bearing technology |
FDB |
| Noise level |
22.1 dB |
| EPS version |
2.92 |
| ATX version |
3.1 |
| Supported motherboard form factors |
ATX, micro ATX, Mini-ATX |
| 80 PLUS certification |
80 PLUS Platinum |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC |
| Design |
| On/off switch |
Yes |
| Fan speed |
0 - 2100 RPM |
| Number of fans |
1 fan(s) |
| Fan diameter |
13.5 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, Federal Communications Commission (FCC), UKCA, WEEE, CE |
| Packaging content |
| Cable tie(s) included |
Yes |
| Cables included |
CPU, SATA |
| Weight & dimensions |
| Weight |
1.81 kg |
| Height |
86 mm |
| Depth |
160 mm |
| Width |
150 mm |
| Packaging data |
| Package type |
Box |
| Package weight |
3.52 kg |
| Package height |
102 mm |
| Package depth |
328 mm |
| Package width |
248 mm |
| Technical details |
| Sustainability compliance |
Yes |
| Sustainability certificates |
Triman, ENERGY STAR, ErP |
