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TFX Power 3 300W Bronze: the upgraded be quiet! PSU for mini and media PCs at a reasonable price.
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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.
| Model | TFX Power 3 300W Bronze |
| Continuous power (W) | 300 |
| Peak power (W) | 350 |
| Form factor ATX 12V | TFX12V V2.52 |
| Form factor EPS 12V | Version 2.92 |
| Modular cable management | - |
| Topology | - |
| Wire-free design (DC-side) | - |
| Voltage (Vac) | 100 - 240 |
| Frequency (Hz) | 50 - 60 |
| Input current (A) | 4A / 1.5A |
| PFC | active |
| Power factor at 100% load | >0.96 |
| Compliant to Intel C6/C7 | Yes |
| Power consumption in standby (W) | <0.14 |
| Average life time (h / 25°C) | 100,000 |
| Operating temperature up to (°C) | 40 |
| 12V rails (multi-rail operation) | - |
| 12V single rail operation | Yes |
| Overclocking key | - |
| +3.3V (A) | 16 |
| +5V (A) | 16 |
| +12V1 (A) | 25 |
| +12V2 (A) | - |
| +12V3 (A) | - |
| +12V4 (A) | - |
| +12V5 (A) | - |
| +12V6 (A) | - |
| -12V (A) | 0.3 |
| +5Vsb (A) | 2.5 |
| Max. combined power 12V (W) | 300 |
| Max. combined power 3.3V + 5V (W) | 85 |
| Hold-up time at 100% load (ms) | 22 (@80%) |
| Power good signal | 100 - 150ms |
| Fan type | High quality fan |
| +SilentWings | - |
| Motor technology | 4-pole fan motor |
| Bearing technology | Rifle |
| Fan size (mm) | 80 |
| Max. fan speed (rpm), temperature-dependent | 1859 |
| Temperature control for case fans | - |
| dB(A) at 20% load | 14.6 |
| dB(A) at 50% load | 15.4 |
| dB(A) at 100% load | 29.1 |
| OCP (over current protection) | Yes |
| OVP (over voltage protection) | Yes |
| UVP (under voltage protection) | Yes |
| SCP (short circuit protection) | Yes |
| OTP (over temperature protection) | - |
| OPP (over power protection) | Yes |
| CE | Yes |
| CB | Yes |
| TÜV | Yes |
| FCC | - |
| cRUus | - |
| cTUVus | - |
| RCM (Australia) | - |
| BSMI | - |
| CU (Russia) | Yes |
| CCC | - |
| 80 PLUS certification | Bronze |
| Efficiency (%) at 230V, 20% load | 84 |
| Efficiency (%) at 230V, 50% load | 88.3 |
| Efficiency (%) at 230V, 100% load | 86.4 |
| ENERGY STAR | 8.0 |
| ErP | Yes |
| WEEE | Yes |
| RoHS | Yes |
| Nvidia® SLI (RTX 3090) ready | - |
| Cable management | Fixed |
| Sleeved cables | Sleeved cables |
| Flat cables | Yes |
| Cable length to mainboard (cm) | 35 |
| Cable length to first connector (cm) | 30 |
| Maximum cable length (cm) | 60 |
| All-in-one cable (SATA/PATA/FDD) | - |
| No. of cables | 5 |
| ATX-Motherboard (20+4-pin) | 1 |
| P8 (CPU) | - |
| P4+4 (CPU) | - |
| P4 (CPU) | 1 |
| PCI-E 6-pin (GPU) | - |
| PCI-E 6+2-pin (GPU) | 1 |
| PATA | 2 |
| SATA | 3 |
| FDD (Floppy) | 1 |
| External fan connectors | - |
| Dimensions without cable (L x W x D), (mm) | 175 x 85 x 65 |
| Weight (kg) | 0.9 |
| Color | Black |
| Thumb screws | - |
| Screws | Yes |
| Cable ties | Yes |
| Velcro cable ties | - |
| Box/Bag for PSU/Cables | - |
| User manual languages | DE, EN, ES, FR, PL, RU |
| Dimensions | |
| Length / Depth | 175 mm |
| Width | 85 mm |
| Height | 65 mm |
| Weight | 0.9 kg |
| Power Specifications | |
| Total Power Output | 300 W |
| Efficiency Class | |
| 80PLUS Efficiency | 80 PLUS Bronze |
| Fan Specifications | |
| Fan Size | 80 mm |
| Colour | |
| Primary Colour | Black |
| Power Supply | |
| PSU Format | TFX |
| Internal Ports | |
| 6+2 Pin PCIe Power Connectors | 1 |
| SATA Power Connectors | 3 |
| 4 Pin Molex Power Connectors | 1 |
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