Be Quiet! PURE POWER 12 550W PSU
£56.32 inc VAT
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About This Item
- ATX 3.1 compliant, PCIe 5.1 compatible
- 550W continuous power, 600W peak power
- 80 PLUS Gold certified, 91.2% efficiency
- Active cooling with 12cm fan, 14.6 dB noise level
- Non-modular cabling, 10-year warranty
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be quiet! PURE POWER 12 550W | ATX 3.1 Gold Power Supply
The be quiet! PURE POWER 12 550W power supply unit delivers ATX 3.1 compliance and PCIe 5.1 compatibility in a quiet, efficient package. With 91.2% efficiency and a rifle-bearing 12cm fan running at just 14.6 dB, this 550W PSU offers exceptional reliability for modern PC builds.
Key Specifications
| Metric | Spec |
|---|---|
| Power Output | 550W (600W peak) |
| Efficiency | 80 PLUS Gold (91.2%) |
| ATX Standard | ATX 3.1 |
| PCIe Support | PCIe 5.1 compatible |
| Fan Noise | 14.6 dB |
Built for Modern Gaming and Professional Systems
This PSU features ATX 3.1 compliance with PCIe 5.1 support, making it ready for next-generation graphics cards and components. The 600W peak capacity provides headroom for demanding workloads, while the single +12V rail delivers clean, stable power to all components. With 100,000-hour MTBF rating, this unit offers exceptional long-term reliability for both gaming and professional applications.
Whisper-Quiet Operation with Advanced Cooling
The rifle-bearing 12cm fan operates at just 14.6 dB, making this one of the quietest 550W PSUs available. The active cooling system maintains optimal temperatures without intrusive noise, perfect for quiet home offices or media centres. The fan’s intelligent speed control ensures minimal noise during light loads while providing adequate cooling under full load conditions.
Comprehensive Protection and Premium Build Quality
Built-in surge and inrush protection (SIP) safeguards your components from electrical spikes and power fluctuations. Over current, over voltage, over power, and short circuit protection provide multiple layers of security. The non-modular cabling design ensures reliable connections while maintaining a clean internal layout. The PSU’s robust construction and premium components deliver consistent performance over its 10-year warranty period.
What Is in the Box
- be quiet! PURE POWER 12 550W PSU
- AC power cable
- Cable ties
- Mounting screws
- PCIe 5.1 cable
- PCIe 6+2 cables
Before you order
- Confirm your case has sufficient space (86mm x 160mm x 150mm)
- Verify your graphics card requires PCIe 5.1 support
- Check if non-modular cabling suits your build preferences
- Ensure your system’s total power draw stays under 550W
Buyer FAQs
Is this PSU compatible with PCIe 5.0 graphics cards?
What ATX version does this support?
How many SATA devices can I connect?
Is the fan temperature-controlled?
What’s the warranty period?
Why we rate it
The be quiet! PURE POWER 12 550W represents an excellent choice for users building quiet, efficient systems who need ATX 3.1 compliance and PCIe 5.1 support. The combination of exceptional noise levels, comprehensive protection features, and 10-year warranty makes this PSU particularly suitable for home offices, media centres, and professional environments where reliability and quiet operation are priorities. Covered by the applicable manufacturer warranty.
| Weight | 2.9 kg |
|---|---|
| Purpose | PC |
| ATX version | 3.1 |
| EPS version | 2.92 |
| Noise level | 14.6 dB |
| Mean time between failures MTBF | 100000 h |
| Bearing technology | Rifle |
| Product colour | Black |
| Fan diameter | 12 cm |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Total power | 550 W |
| Maximum input current 220V | 5 A |
| Peak power | 600 W |
| AC input voltage | 100 – 240 V |
| AC input frequency | 50/60 Hz |
| Power factor | 0.98 |
| Power Factor Correction PFC type | Active |
| Maximum input current 110V | 10 A |
| Combined power +3.3V | 120 W |
| Combined power +5V | 120 W |
| Combined power -12V | 3.6 W |
| Combined power +5Vsb | 15 W |
| Max output current +3.3V | 20 A |
| Max output current +12V1 | 45.8 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, Surge & inrush protection (SIP), Under voltage |
| Hold time | 16.64 ms |
| Efficiency | 91.2% |
| Number of +12V rails | 1 |
| Motherboard power cable length | 55 cm |
| SATA power cable length | 500,650,800 mm |
| Peripheral Molex power cable length | 800 mm |
| PCI Express power cable length | 60 cm |
| CPU power cable length | 60 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 5 |
| Peripheral Molex power connectors 4-pin | 1 |
| PCI Express power connectors 6+2 pin | 2 |
| CPU power connector 4+4 pin | Yes |
| Cabling type | Non-Modular |
| PCI Express power connectors 12-pin | 1 |
| Operating temperature T-T | 0 – 40 °C |
| Storage temperature T-T | -20 – 70 °C |
| Operating relative humidity H-H | 0 – 90% |
| Storage relative humidity H-H | 0 – 95% |
| Sustainability certificates | ENERGY STAR, ErP, Triman |
| Warranty period | 10 year(s) |
| Compliance certificates | CB, CE, Federal Communications Commission (FCC), RoHS, UKCA, WEEE, cTUVus |
| Cable ties included | Yes |
| Width | 86 mm |
| Depth | 160 mm |
| Height | 150 mm |
| Weight | 2.3 kg |
| Cables included | AC |
| Package depth | 320 mm |
| Package width | 133 mm |
| Package height | 210 mm |
| Package weight | 2.8 kg |
| Shipping inner case width | 34.5 cm |
| Shipping inner case net weight | 17.7 kg |
| Shipping inner case length | 44 cm |
| Shipping inner case height | 41.8 cm |
| Products per shipping inner case | 6 pc(s) |
| Screws included | Yes |
| Distributor SKUs | PSBEQ-BP001EU, 556996, STD10220408, 1999494 |
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