be quiet! Straight Power 11 Platinum 650W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency. 80 PLUS Platinum certification with an outstanding efficiency of up to 93,7% 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 four 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 5-year manufacturer's warranty Product conception, design and quality control in Germany