Tired of noisy, unreliable power units that limit your PC’s performance? The be quiet! PURE POWER 12 M, 1200W, 100 - 240 V, 50/60 Hz, 15 - 7.5A, Power Supply delivers a whisper-quiet, rock-solid source of energy for high-end builds, keeping every component fed safely while you focus on gaming, creation or work.
Benefits of be quiet! Power Supply
- Silent operation: The low-noise fan and silent mode keep sound levels below 35 dB, so you can work or game without distraction.
- Energy savings: 91.5 % efficiency reduces electricity costs and lowers heat output.
- Long lifespan: A 100 000 h MTBF and rifle bearing fan mean fewer replacements and less maintenance.
- Comprehensive protection: Over-current, over-voltage, overheating and short-circuit safeguards protect your hardware.
- Future-proof connectivity: Includes PCIe 5.0 and PCIe 6+2 cables for today’s GPUs and tomorrow’s upgrades.
be quiet! Power Supply Overview
With this unit installed, you’ll notice a steadier, cooler system that runs almost silently. The fully-modular design lets you route only the cables you need, improving airflow and making cable management a breeze. Whether you’re overclocking a powerful CPU or running multiple graphics cards, the PSU supplies stable power, giving you confidence that your rig will perform consistently under load.
Usages of a 1200W Power Supply
A 1200W capacity makes this power supply ideal for high-performance gaming rigs, professional workstations, and content-creation PCs that demand multiple GPUs, large storage arrays and demanding CPUs. It also suits small-form-factor builds where efficient cooling and quiet operation are essential.
Key Features of a 1200W Power Supply
- Power rating: 1200 W. Provides ample headroom for the most power-hungry systems.
- Efficiency: 91.5 %. Keeps electricity use low while delivering reliable power.
- Certification: 80 PLUS Gold. Guarantees high efficiency across the load range.
- Modular cabling: Fully-modular. Lets you connect only the cables you need for a tidy build.
- PCIe connectors: 4 × 6+2 pin. Supports current-gen and next-gen graphics cards.
- CPU power cable length: 60 cm. Gives flexibility for larger cases and complex routing.
- Fan speed: 0 - 2700 RPM. Adjusts automatically to maintain silence and cooling.
- Noise level: 34.3 dB. Ensures a quiet environment even under full load.
- Dimensions: 86 mm × 150 mm × 160 mm. Fits standard ATX cases without space issues.
- Weight: 1.92 kg. Sturdy yet manageable for installation.
Specifications
| Power |
| Power protection features |
Over current, Over power, Over voltage, Overheating, Short circuit, Under power, Under voltage |
| Efficiency |
91.5% |
| Hold time |
19 ms |
| Max output current (-12V) |
0.3 A |
| Max output current (+5V) |
22 A |
| Max output current (+12V2) |
50 A |
| Max output current (+12V1) |
55 A |
| Max output current (+3.3V) |
22 A |
| Combined power (+5V) |
120 W |
| Combined power (+12V) |
1200 W |
| Combined power (+3.3V) |
120 W |
| Power factor |
0.98 |
| Input current |
15 - 7.5 A |
| AC input frequency |
50/60 Hz |
| AC input voltage |
100 - 240 V |
| Peak power |
1250 W |
| Total power |
1200 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| PCI Express connector |
Yes |
| ATX power connector (20+4 pin) |
Yes |
| CPU power cable length |
60 cm |
| CPU power connector (4+4 pin) |
Yes |
| PCI Express power cable length |
60 cm |
| PCI Express power connectors (6+2 pin) |
4 |
| EPS power connector (8-pin) |
Yes |
| Peripheral (Molex) power cable length |
800,950 mm |
| Peripheral (Molex) power connectors (4-pin) |
0 |
| SATA power cable length |
500,650,800,950 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 |
| Bearing technology |
Rifle |
| Noise level |
34.3 dB |
| Silent mode |
Yes |
| EPS version |
2.92 |
| ATX version |
3.1 |
| Supported motherboard form factors |
ATX |
| 80 PLUS certification |
80 PLUS Gold |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC |
| Design |
| On/off switch |
Yes |
| Fan speed |
0 - 2700 RPM |
| 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 |
BSMI, CB, CCC, CE, Federal Communications Commission (FCC), RoHS, cTUVus, UKCA, WEEE |
| Packaging content |
| Cable tie(s) included |
Yes |
| Cables included |
AC, CPU, PATA, PCIe, SATA |
| Weight & dimensions |
| Weight |
1.92 kg |
| Height |
86 mm |
| Depth |
160 mm |
| Width |
150 mm |
| Packaging data |
| Package type |
Box |
| Package weight |
3.19 kg |
| Package height |
100 mm |
| Package depth |
284 mm |
| Package width |
220 mm |
| Technical details |
| Sustainability compliance |
Yes |
| Sustainability certificates |
ENERGY STAR, ErP, Triman |
