Corsair CX550 (CP-9020277)

The Corsair CX550 (CP-9020277) is a 550-watt ATX power supply designed for home, office, and entry-level gaming PCs that require stable, reliable power without excessive wattage overhead. It carries 80 PLUS Bronze certification with efficiency up to 88%, operates across 100–240 V input, and supports 47–63 Hz frequency. As a non-modular unit, all cables are permanently fixed to the chassis, a design choice that simplifies construction and works well for standard builds with a single processor, one graphics card, multiple storage drives, and basic peripherals. The +12 V rail delivers 44 A and 528 W, with total output of 550 W. Connectors include one ATX 24 pin, one EPS/ATX12V 4+4 pin, two PCIe 6+2 pin connectors on a single cable, three SATA connectors, and two PATA connectors. The unit features a 120 mm thermally controlled fan that automatically reduces speed under light loads and ramps up during intensive system operation. The compact 125 mm chassis depth makes installation straightforward in most modern cases, even those with limited space in the power supply bay. The Corsair CX550 is well-suited for PCs equipped with mid-range processors, SSDs, HDDs, and graphics cards with moderate power consumption.