be quiet!
be quiet! System Power 11 550W power supply unit 20+4 pin ATX ATX
Proven Reliability, Quiet Operation System Power 11 550W has been built with value-oriented users in mind that do not want to pass on reliability and quietness. Elaborated features such as ATX 3.1 compatibility and a temperature-controlled fan underline the value System Power 11 550W offers even at entry-level. Technical details Sustainability certificates: ENERGY STAR, ErP Ports & interfaces Motherboard power connector: 20+4 pin ATX Peripheral (Molex) power connectors (4-pin): 1 Number of SATA power connectors: 5 PCI Express power connectors (6+2 pin): 2 PCI Express power connectors (12-pin): 1 CPU P4 connector (4-pin): 1 CPU power connector (4+4 pin): Yes PCI Express connector: Yes Cabling type: Non-Modular Weight & dimensions Width: 150 mm Depth: 86 mm Height: 140 mm Weight: 1.92 kg Power Total power: 550 W AC input voltage: 200 - 240 V AC input frequency: 50 Hz Input current: 4 A Power factor: 0.98 Number of +12V rail(s): 1 Combined power (+3.3V): 120 W Combined power (+12V): 550 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): 45.83 A Max output current (+5V): 20 A Max output current (-12V): 0.3 A Max output current (+5Vsb): 3 A Hold time: 16.86 ms Efficiency: 89.7% Power protection features: Over current, Over power, Over voltage, Overheating, Short circuit, Surge & inrush, Under voltage Packaging data Package width: 195 mm Package depth: 268 mm Package height: 97 mm Package weight: 2.3 kg Package type: Box Certificates Waste Electrical and Electronic Equipment (WEEE) compliance: Yes Compliance certificates: CB, CE, RoHS, TÜV mark, UKCA, WEEE Other features Screws included: Yes Cable ties included: Yes Design Product colour: Black Cooling type: Active Fan diameter: 12 cm Number of fans: 1 fan(s) Fan speed: 0 - 1800 RPM Illumination: No On/off switch: Yes Performance Purpose: PC Power supply unit (PSU) form factor: ATX 80 PLUS certification: 80 PLUS Bronze ATX version: 3.1 EPS version: 2.92 Noise level: 24.2 dB Bearing technology: Rifle Mean time between failures (MTBF): 100000 h Logistics data Shipping (inner) case length: 55.6 cm Shipping (inner) case width: 31.1 cm Shipping (inner) case height: 21.8 cm Products per shipping (inner) case: 6 pc(s) Shipping (inner) case gross weight: 14.9 kg
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Price history (lowest price)
2026-07-12 – 2026-07-25min £62.57 · max £65.75
Product details
- Brands
- be quiet!
- GTIN
- 04260052191866
- Categories
- Electronics > Electronics Accessories > Computer Components > Desktop Computer & Server Cases
