be quiet! Straight Power E9 power supply unit 700 W 20+4 pin ATX ATX Black

- Virtually silent operation achieved through a broad array of meticulous optimizations, including use of custom-designed 135mm SilentWings® Fan. - SilentWings fan features airflow-optimized fan blade, fluid dynamic bearing with copper core and high quality IC motor controller. - 700 Watts of continuous power provide strong power reserves for those times your PC really needs it all. - 80PLUS Gold certification and up to 92.9% power conversion efficiency let you do more work with the same power and reduce your power bills. - Multi-GPU ready so you can build a system with more powerful graphics capability. - German product conception, design and quality control.