be quiet! Straight Power 11 550W Platinum power supply unit 20+4 pin ATX ATX Black

80 PLUS® Platinum certification with an outstanding efficiency of up to 93.8%. Virtually inaudible operation thanks to a Silent Wings 3 135mm fan. Big funnel-shaped fan opening of the PSU case for high airflow intake. Wire-free on the DC side inside the PSU for enhanced cooling and longevity. Modular cables for maximum build flexibility. Advanced stability and voltage regulation thanks to LLC, SR and DC-to-DC. Four high-performance 12V rails. Powerful multi-GPU support with two PCI-Express connectors. Japanese 105°C-rated capacitors ensure stability and reliability. Power signal stability unmatched in its class. ErP and Energy Star 7.0 ready. Product conception, design and quality control in Germany. be quiet! Straight Power 11 Platinum 550W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency.. Power. Power protection features. Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage. Hold time. 17.7 ms. Efficiency. 9