be quiet! System Power 11 450W (BP009)

The be quiet! System Power 11 450W (BP009) is an entry-level power supply designed for office, home, and casual gaming builds, with emphasis on compatibility with current standards. The unit meets ATX 3.1 specifications, carries 80 PLUS Bronze certification with efficiency up to 89%, features a 120 mm thermally controlled fan, and uses DC-to-DC architecture to improve voltage stability under varying loads. On the +12 V rail, the PSU delivers 37.5 A and the full 450 W capacity, making it sufficient for systems with mid-range processors and moderate-power graphics cards. The manufacturer confirms compatibility with PCIe 5.1 GPUs and standard 6+2-pin connectors, with two PCIe 6+2-pin connectors included in the configuration. The be quiet! System Power 11 450W (BP009) supports power transients up to twice its rated capacity, meeting modern ATX 3.1 specification requirements. A practical feature is its extremely low standby consumption at less than 0.15 W. This power supply is ideal for non-extreme builds where quiet operation, current ATX standards, and reliable power delivery for everyday computing are priorities.