Gigabyte P450B 80 Plus Bronze SMPS

The Gigabyte P450B is a 450-watt ATX power supply unit designed for budget-conscious desktop PC builders who still demand reliable, efficient power delivery. Carrying the 80 PLUS Bronze certification, the P450B is independently tested to operate at a minimum of 82% efficiency at 20% load, 85% efficiency at 50% load, and 82% efficiency at 100% load — meaning less energy is wasted as heat compared to uncertified units, and your electricity bill stays in check during long gaming or work sessions. At the heart of the P450B's thermal management sits a 120mm fan fitted with a Hydraulic Bearing (HYB). Hydraulic bearings sit between sleeve and ball-bearing designs, offering quieter operation than sleeve bearings and a longer rated lifespan, so the fan can keep the internals cool without generating unnecessary noise during everyday tasks. The P450B uses a single +12V rail topology, which simplifies power delivery to high-current components such as the CPU and discrete graphics card. With all 12V capacity consolidated on one rail, there is no risk of individual rail limits being hit before the unit reaches its total rated output — a practical advantage for builds pairing this unit with a mid-range GPU. Cabling is non-modular with flat cables. The flat-cable design reduces clutter inside the chassis compared to traditional round-wire looms, aiding airflow and making cable management in compact and mid-tower cases noticeably easier even without fully modular connectors. Gigabyte backs the P450B with a 3-year warranty, giving builders confidence in long-term reliability. Verified Specifications: • Model: Gigabyte P450B (GP-P450B) • Rated Output: 450W • Efficiency Certification: 80 PLUS Bronze • Fan Size: 120mm • Fan Bearing Type: Hydraulic Bearing (HYB) • +12V Configuration: Single rail • Cable Type: Non-modular, flat cables • Form Factor: ATX • Color: Black • Warranty: 3 Years • GTIN/EAN: 4719331551612