be quiet! TFX Power 3 300W Gold – Compact, Silent, and Efficient PSU
The be quiet! TFX Power 3 300W Gold is a compact and silent power supply unit designed for mini or media PCs with TFX form factor. It supports the latest standards, delivers solid voltages, and provides enough power to run a PCIe graphics card, making it an excellent choice for small, quiet systems.
Key Features
-
80 PLUS® Gold certified efficiency (up to 91.7%)
Ensures outstanding energy efficiency for lower power consumption and reduced operating costs. -
Strong dual 12V rails for stable operation
The CPU is powered through an independent rail for high stability, while an included PCIe connector supports demanding peripherals like graphics cards. -
Ideal for small systems with low noise requirements
Perfect for users who need reliable power and quiet performance in compact TFX-based PCs. -
Optimized low-noise cooling
A high-quality, temperature-controlled 80mm fan ensures quiet operation with a maximum noise level of just 21.7 dB(A), while producing minimal wasted heat. -
Comprehensive protection features
Meets the latest safety requirements to protect your system against overcurrents, overvoltage, undervoltage, short circuit, overload, and comparable failures. -
Efficient standby operation
Standby power draw of less than 0.17 watts. -
High-quality cable design
Sleeved or flat black cables up to 60 cm long for clean, discreet cable management in compact builds. -
Reliable quality
Includes a three-year manufacturer’s warranty. Product conception, design, and quality control are carried out in Germany.
Technical Specifications
| Specification | Detail |
|---|---|
| Wattage | 300W (continuous power) |
| Form Factor | TFX |
| Connectivity | Non-Modular |
| 80 Plus Rating | 80 PLUS Gold (up to 91.7% efficiency) |
| Fan Size | 80mm |
| Fan Noise Level | Max. 21.7 dB(A) |
| Warranty | 3 Year Warranty |
| MTBF (Mean Time Between Failure) | 100,000 |
| PFC (Power Factor Correction/Controller) | Active PFC |
| Standby Power Draw | < 0.17W |
| Color | Black |
| Weight | 1.1 kg |
| Dimensions (L x W x H, without cable) | 175 x 85 x 65 mm |
Cables & Connectors
| Cable Type | Details |
|---|---|
| Total Number of Cables | 5 |
| Sleeved Cables | P24 |
| Flat Cables | P4, PCIe, drives |
| Maximum Cable Length | 60 cm |
| Cable Length to Motherboard | 35 cm |
Connectors
- ATX-Motherboard (20+4-pin): 1
- P4 (CPU): 1
- PCIe 6+2-pin (GPU): 2
- SATA: 3
- PATA: 2
- FDD (Floppy): 1
The be quiet! TFX Power 3 300W Gold combines compact TFX form factor, high efficiency, stable dual-rail power delivery, and very low noise levels, making it a compelling power supply choice for mini and media PCs.
