be quiet! SFX L 500W PSU
£86.66 inc VAT
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About This Item
- 12 cm fan with 9.9 dB silent mode
- 500 W SFX form factor with 80 PLUS Gold certification
- Fully modular flat cables for tidy installation
- Supports Mini-ITX and ATX cases via adapter bracket
- 6 SATA and 4 PCIe 6+2 pin connectors
- 92% efficiency with active PFC and 16.7 ms hold time
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be quiet! SFX L Power 500W | Compact Silent PSU for Mini-ITX Builds
The be quiet! SFX L Power power supply unit 500 W 20+4 pin ATX Black delivers reliable, efficient power in a compact form factor ideal for Mini-ITX and small-form-factor gaming PCs. With 80 PLUS Gold certification and fully modular cabling, it balances performance with quiet operation.
Specifications
| Metric | Spec. |
|---|---|
| Total Power | 500 W |
| Efficiency | 92% (80 PLUS Gold) |
| Noise Level (Silent Mode) | 9.9 dB |
| Form Factor | SFX |
| Fan Size | 120 mm |
Compact Design for Mini-ITX Systems
The SFX L Power is engineered specifically for compact builds where space is at a premium. At just 125 mm wide, 130 mm deep, and 64 mm high, it fits seamlessly into Mini-ITX cases while providing ample power for modern components. The included SFX-to-ATX adapter bracket adds versatility, allowing installation in standard ATX cases when needed.
Exceptional Quiet Operation
Operating at just 9.9 dB in silent mode, this PSU is one of the quietest in its class. The temperature-controlled 120 mm fan adjusts its speed based on system load, maintaining near-silent operation during light tasks while scaling up only when necessary. This makes it perfect for HTPCs and media centres where noise reduction is paramount.
Gold-Rated Efficiency Saves Energy
With 80 PLUS Gold certification and up to 92% efficiency, the SFX L Power reduces wasted energy and heat output. This translates to lower electricity bills and cooler system operation. The Active Power Factor Correction (PFC) maintains a 0.99 power factor, ensuring clean power delivery to your components.
Fully Modular Cable Management
The fully modular design lets you connect only the cables you need, reducing clutter and improving airflow within your compact case. Premium black flat cables are easy to route and keep your build looking clean and professional. Six SATA connectors and four PCIe 6+2 pin connectors provide ample connectivity for storage and graphics cards.
Reliable Power Delivery
A stable 12V rail, high-quality Japanese capacitors, and advanced technologies like LLC, Synchronous Rectifier, and DC-to-DC conversion ensure consistent, clean power delivery. The PSU includes comprehensive protection features: over current, over power, over voltage, overheating, short circuit, and under voltage protection.
What is in the box
- be quiet! SFX L Power 500W PSU
- SFX-to-ATX adapter bracket
- Modular cables
- Mounting screws
- Cable ties
- User manual
Check before you buy
- Confirm your case supports SFX or has space for the SFX-to-ATX adapter
- Verify your GPU power requirements match the available PCIe connectors
- Check that your motherboard’s 20+4 pin ATX connector is within 30 cm of the PSU
- Confirm your system’s total power draw stays within the 500 W continuous rating
Questions and answers
Can this PSU power a high-end gaming PC?
Is this PSU suitable for overclocking?
How many PCIe connectors does it have?
Can I use this in a standard ATX case?
The bottom line
The be quiet! SFX L Power 500W is an excellent choice for Mini-ITX builders seeking reliable, quiet power in a compact package. Its 80 PLUS Gold efficiency, fully modular design, and comprehensive protection features make it ideal for compact gaming systems and HTPCs. Covered by the applicable manufacturer warranty.
| Weight | 2 kg |
|---|---|
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM |
| Silent mode | Yes |
| Purpose | PC |
| ATX version | 2.4 |
| Bearing technology | Sleeve |
| Supported motherboard form factors | Mini-ITX |
| Product colour | Black |
| Fan diameter | 12 cm |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Total power | 500 W |
| Peak power | 550 W |
| AC input voltage | 100 – 240 V |
| AC input frequency | 50 – 60 Hz |
| Input current | 10 A |
| Power factor | 0.99 |
| Power Factor Correction PFC type | Active |
| Combined power +3.3V | 105 W |
| Combined power +5V | 105 W |
| Combined power -12V | 3.6 W |
| Combined power +5Vsb | 15 W |
| Max output current +3.3V | 20 A |
| Max output current +5V | 20 A |
| Max output current -12V | 0.3 A |
| Max output current +5Vsb | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Hold time | 16.7 ms |
| Efficiency | 92% |
| Motherboard power cable length | 30 cm |
| PCI Express power cable length | 40 cm |
| CPU power cable length | 40 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 6 |
| Number of PATA power connectors | 3 |
| PCI Express power connectors 6+2 pin | 4 |
| CPU power connector 4+4 pin | Yes |
| Cabling type | Fully-Modular |
| Width | 125 mm |
| Depth | 130 mm |
| Height | 64 mm |
| Weight | 1.14 kg |
| Package depth | 220 mm |
| Package width | 205 mm |
| Package height | 80 mm |
| Package type | Box |
| Package weight | 2.02 kg |
| Sustainability certificates | ENERGY STAR |
| Compliance certificates | RoHS |
| Master outer case width | 430 mm |
| Master outer case length | 430 mm |
| Master outer case height | 240 mm |
| Products per master outer case | 10 pc(s) |
| Master outer case gross weight | 21.4 kg |
| Screws included | Yes |
| Cable ties included | Yes |
| Noise level quiet mode 50 | 14 dB |
| Noise level silent mode | 9.9 dB |
| Noise level full-load mode 100 | 28.5 dB |
| Manual | Yes |
| Harmonized System HS code | 84733020 |
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