TFX Power 3 300W Bronze, the advanced be quiet! compact PSU gives you more for your mini or media PC. It supports the latest standards while providing solid voltages and enough power to support a PCIe graphics card. The combination of quiet operation and reliability make the TFX Power 3 300W Bronze the perfect choice for PCs with TFX form factor.
80 PLUS® BRONZE CERTIFICATION
Efficient operation
The 80 PLUS Bronze certification of TFX Power 3 300W Bronze with an efficiency rating of up to 88.3% is convincing evidence of this PSU’s power saving operation.
STRONG SINGLE 12V RAIL
For maximum power
The 12V rail design supports high stability as the CPU receives its power through an independent rail. For demanding peripherals like a graphics card, a PCIe connector is included. This makes the TFX Power 3 300W Bronze the ideal PSU for all who strive for enough power to support small systems at low noise.
QUIET AND SAFE
Optimized for low-noise operation
The temperature-controlled fan ensures a quiet operation and produces little wasted heat. Since TFX Power 3 300W Bronze meets the latest safety requirements, it defends the PC system against overcurrents, over- and undervoltage, short circuit, overloads and comparable failures.
Ports & interfaces | Motherboard power connector | 20+4 pin ATX |
 | Peripheral (Molex) power connectors (4-pin) | 2 |
| Motherboard power cable length | 350 mm |
| Number of SATA power connectors | 3 |
| SATA power cable length | 300,450,600 mm |
| Peripheral (Molex) power cable length | 300,450 mm |
| PCI Express power connectors (6+2 pin) | 1 |
| PCI Express power cable length | 400 mm |
| CPU P4 connector (4-pin) | 1 |
| CPU power cable length | 350 mm |
| Floppy drive power connector | 1 |
| Floppy disk drive cable length | 600 mm |
| Cabling type | Non-Modular |
Power | Total power | 300 W |
| AC input voltage | 100 - 240 V |
| Peak power | 350 W |
| AC input frequency | 50 - 60 Hz |
| Input current | 4/1.5 A |
| Maximum input current (@110V) | 4 A |
| Maximum input current (@220V) | 1.5 A |
| Power factor | 0.96 |
| Power Factor Correction (PFC) type | Active |
| Combined power (+3.3V) | 85 W |
| Combined power (+12V) | 300 W |
| Combined power (+5V) | 85 W |
| Max output current (+3.3V) | 16 A |
| Max output current (+12V1) | 25 A |
| Max output current (+5V) | 16 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| Hold time | 22 ms |
| Efficiency | 86.4 % |
| Power protection features | Over current, Over power, Over voltage, Short circuit, Under voltage |
Packaging data | Package width | 159 mm |
| Package depth | 80 mm |
| Package height | 215 mm |
| Package weight | 1240 g |
Logistics data | Shipping (inner) case length | 474 mm |
| Shipping (inner) case width | 275 mm |
| Shipping (inner) case height | 195 mm |
| Shipping (inner) case gross weight | 8250 g |
| Harmonized System (HS) code | 84733020 |
Performance | Purpose | PC |
| Power supply unit (PSU) form factor | TFX |
| 80 PLUS certification | 80 PLUS Bronze |
| ATX version | 2.52 |
| EPS version | 2.92 |
| Noise level | 29.1 dB |
| Bearing technology | Rifle |
| Mean time between failures (MTBF) | 100000 h |
| Safety | CE, CB, TÜV, CU |
Technical details | Sustainability compliance | Yes |
| Sustainability certificates | ENERGY STAR, ErP, RoHS, WEEE |
Design | Product colour | Black |
| Cooling type | Active |
| Fan diameter | 80 mm |
| Number of fans | 1 fan(s) |
Weight & dimensions | Width | 85 mm |
| Depth | 175 mm |
| Height | 65 mm |
| Weight | 900 g |