Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Technical details | |
| Sustainability compliance | ![]() |
| Sustainability certificates | ENERGY STAR, ErP |
| Ports & interfaces | |
| PCI Express connector | ![]() |
| Motherboard power connector | 20+4 pin ATX |
| Floppy drive power connector | 1 |
| Number of SATA power connectors | 3 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| EPS power connector (8-pin) | ![]() |
| ATX power connector (20+4 pin) | ![]() |
| PCI Express power connectors (8-pin) | 2 |
| CPU power connector (4+4 pin) | ![]() |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Non-Modular |
| Motherboard power cable length | 35 cm |
| SATA power cable length | 300,450,600 mm |
| Peripheral (Molex) power cable length | 300,450 mm |
| PCI Express power cable length | 55 cm |
| Floppy disk drive cable length | 60 cm |
| EPS power connector (4+4 pin) | ![]() |
| Weight & dimensions | |
| Weight | 890 g |
| Height | 64 mm |
| Width | 125 mm |
| Depth | 100 mm |
| Energy management | |
| Peak power | 500 W |
| Input current | 6/2.5 A |
| Nominal power | 450 W |
| Efficiency | 85.9% |
| Hold time | 21 ms |
| Power protection features | Over current, Over power, Over voltage, Short circuit, Under voltage |
| Power factor | 0.98 |
| Power Factor Correction (PFC) type | Active |
| Combined power (+3.3V) | 85 W |
| Combined power (+12V) | 450 W |
| Combined power (+5V) | 85 W |
| Max output current (+3.3V) | 16 A |
| Max output current (+5V) | 16 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| AC input frequency | 50 - 60 Hz |
| AC input voltage | 100 - 240 V |
| Max output current (+12V1) | 37.5 A |
| Total power | 450 W |
| Maximum input current (@110V) | 6 A |
| Maximum input current (@220V) | 2.5 A |
| Packaging data | |
| Package weight | 1.24 kg |
| Package depth | 75 mm |
| Package height | 207 mm |
| Package width | 197 mm |
| Package type | Box |
| Certificates | |
| RoHS compliance | ![]() |
| 80 PLUS certification | 80 PLUS Bronze |
| Design | |
| Product colour | Black |
| Illumination | ![]() |
| Number of fans | 1 fan(s) |
| On/off switch | ![]() |
| Cooling type | Active |
| Fan diameter | 8 cm |
| Performance | |
| Mean time between failures (MTBF) | 100000 h |
| Safety | CE, CB, TÜV, CU |
| Form factor | SFX |
| Noise level | 33.8 dB |
| Purpose | PC |
| Bearing technology | Rifle |
| ATX version | 3.42 |
| EPS version | 2.92 |
| Silent mode | ![]() |
| Power supply unit (PSU) form factor | SFX |
| Logistics data | |
| Shipping (inner) case width | 26.5 cm |
| Shipping (inner) case length | 45.7 cm |
| Shipping (inner) case height | 23.3 cm |
| Shipping (inner) case gross weight | 8.19 kg |
| Products per shipping (inner) case | 6 pc(s) |
| Harmonized System (HS) code | 84733020 |
| EAN | 4260052188279 |
| Warranty | 5 years |
The BE QUIET! SFX Power 3 is a 450-watt power supply designed for compact systems with its SFX form factor. It operates with an 80 PLUS Bronze certification, indicating a typical energy efficiency of up to 89.3 percent. This model provides stable and continuous power delivery, suitable for mini-ITX and media PC builds that include a dedicated PCIe graphics card. The unit's active power factor correction helps maintain a consistent output.
For thermal management, the PSU utilizes a single 80mm fan for active cooling. Its non-modular design means all cables are permanently attached, a key consideration for cable routing in small enclosures. The unit includes a comprehensive suite of safety protections, such as over voltage, over power, and short circuit, to safeguard connected components. It is equipped with two 6+2 pin PCIe connectors and three SATA power connectors to support common system configurations.
Key Features:- Delivers 450W of continuous power
- Features 80 PLUS Bronze efficiency certification
- Built in the compact SFX form factor
- Non-modular design with fixed cables
- Provides two 6+2 pin PCIe and three SATA connectors
- Cooled by a temperature-controlled 80mm fan
- Includes a full suite of power protection circuits
- Measures 125 x 64 x 100 mm
Estimated delivery: 01.12
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Estimated delivery: 01.12
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Estimated delivery: 01.12
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Estimated delivery: 01.12
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Estimated delivery: 01.12
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Estimated delivery time: 01.12
Estimated delivery time: 02.12
Estimated delivery time: 01.12
Estimated delivery time: 02.12
Estimated delivery time: 02.12
Estimated delivery time: 02.12


