Gigabyte P550B 80 Plus Bronze SMPS

The Gigabyte P550B (GP-P550B) is a 550-watt ATX power supply carrying the 80 PLUS Bronze certification, which means it operates at a minimum of 82% energy efficiency under typical load conditions. This certification helps reduce wasted heat and lowers electricity draw compared to uncertified units, making it a practical choice for budget-conscious builders who still want reliable efficiency standards. A defining characteristic of the P550B is its single +12V rail design. A single-rail topology delivers the full 12V capacity directly to connected components without splitting current across multiple rails, which can simplify compatibility with modern CPUs and graphics cards that draw heavily from the 12V line. This makes the unit well-suited to mainstream gaming and productivity desktop builds. The P550B uses a 120mm hydraulic bearing (HYB) fan for system cooling. Hydraulic bearing fans are known for smoother, quieter operation compared to sleeve-bearing alternatives, and they generally offer a longer operational lifespan. The fan regulates speed based on internal temperature, helping keep noise levels low during light workloads. Cabling on the P550B uses a flat cable design. Flat cables are easier to route inside a chassis compared to traditional round or braided cables, which can assist with airflow management and a tidier build. The unit is non-modular, meaning all cables are permanently attached — a trade-off that simplifies the internal wiring harness while requiring careful cable management. Verified Specifications: – Model: Gigabyte P550B (GP-P550B) – Rated Output Power: 550W – Efficiency Certification: 80 PLUS Bronze – Fan Type: 120mm Hydraulic Bearing (HYB) – Rail Configuration: Single +12V rail – Cable Design: Flat, non-modular – GTIN/EAN: 4719331551490 – Price: ₹3,099 (regular ₹4,999) – Stock Status: In stock The P550B is positioned as a reliable entry-level to mid-range power supply for ATX desktop builds where a clean, efficient 550W feed is sufficient. Builders pairing it with a mid-range GPU and a mainstream CPU should find ample headroom for stable operation