The be quiet! System Power 11 650W is a reliable power supply designed to provide stable energy for your computer components. It features an 80 PLUS Bronze efficiency rating, reaching up to 89.7%, which helps reduce energy waste and heat during operation. This unit utilizes a double forward topology with DC-DC conversion to ensure a steady power flow, specifically through a single 12V rail capable of delivering 54.17 A. To keep your workspace peaceful, it includes a 120mm silence-optimized fan with a rifle bearing that operates as quietly as 10.9 dBA under light loads. The black ATX 3.1 chassis measures 150 x 140 x 86 mm and weighs 1.97 kg, fitting comfortably into most standard cases. You will find a versatile set of connectors, including a 12V-2x6 PCIe 5.1 cable for modern graphics cards, alongside sleeved motherboard cables and flat CPU and SATA leads for easier cable management. This power supply is a practical choice for users building a balanced home or office PC who value a quiet environment and long-term stability. With a lifespan exceeding 100,000 hours at 25°C and a comprehensive suite of protections like OCP, OVP, and SCP, it offers a secure foundation for your hardware.