be quiet! TFX Power 3 300W Gold TFX PSU Silent Compact
be quiet! TFX Power 3 300W 80 PLUS Gold TFX Power Supply
The be quiet! TFX Power 3 300W is a compact, high-efficiency power supply designed specifically for small form factor and media PCs using the TFX standard. Despite its compact size, it delivers stable power, PCIe graphics card support and exceptionally quiet operation, making it ideal for space-saving systems without compromising reliability.
Engineered in Germany and built to meet the latest safety and efficiency standards, TFX Power 3 offers dependable performance for modern compact builds.
Key Features & Benefits
✔ 80 PLUS Gold certified efficiency up to 91.7% for reduced power consumption and lower heat output
✔ Dual 12V rail design for improved voltage stability and component protection
✔ PCIe 6+2-pin connectors to support dedicated graphics cards
✔ Ultra-quiet temperature-controlled 80mm fan with noise levels up to just 21.7dB(A)
✔ Compact TFX form factor ideal for mini PCs and media centre systems
✔ High-quality sleeved and flat black cables for clean, space-efficient installation
✔ Designed, engineered and quality controlled in Germany
✔ Three-year manufacturer warranty
High Efficiency in a Compact Form
TFX Power 3 300W achieves 80 PLUS Gold certification with efficiency levels of up to 91.7%. This results in less wasted energy, reduced heat generation and quieter operation, making it perfectly suited for compact systems where airflow and acoustics are critical.
Stable Power Delivery for Modern Components
Thanks to its dual 12V rail layout, the CPU is powered through a dedicated rail for improved stability, while demanding components such as graphics cards are supported via PCIe connectors. This ensures reliable operation even under load, despite the PSU’s small footprint.
Optimised for Quiet Operation
The temperature-controlled 80mm fan automatically adjusts its speed based on system load, delivering effective cooling with minimal noise. Combined with high internal efficiency, this results in an exceptionally quiet power supply ideal for living room or office environments.
Comprehensive Safety Protection
TFX Power 3 meets the latest safety requirements and protects your system against overcurrent, overvoltage, undervoltage, short circuit and overload conditions, ensuring long-term reliability and peace of mind.
Technical Specifications
Wattage: 300W
Form Factor: TFX
Efficiency Rating: 80 PLUS Gold
Cooling Fan: 80mm temperature-controlled fan
Noise Level: Up to 21.7dB(A)
PFC: Active PFC
Input Current: 4A / 2A
MTBF: 100,000 hours
Standby Power Draw: <0.17W
Colour: Black
Cables & Connectors
Modularity: Non-modular
Maximum Cable Length: 60cm
Cable Length to Motherboard: 35cm
Number of Cables: 5
ATX 20+4-pin x1
CPU P4 x1
PCIe 6+2-pin x2
SATA x3
PATA x2
FDD x1
Physical Specifications
Dimensions (L x W x H): 175 x 85 x 65mm
Weight: 1.1kg
Why Choose the be quiet! TFX Power 3 300W
The be quiet! TFX Power 3 300W is the perfect solution for compact PC builds that demand quiet operation, high efficiency and reliable power delivery. With PCIe support, dual 12V rails and Gold-rated efficiency, it delivers premium performance in a small, unobtrusive form factor trusted by system builders worldwide.