THERMALTAKE Smart BX3 550W 80+ Bronze Non Modular ATX 3.1 Power Supply (550 W)

The Thermaltake Smart BX3 550W is an entry-level ATX 3.1 power supply built for budget-focused desktop builds that need dependable, basic power delivery. With a continuous rated output of 550 watts and 80 PLUS Bronze certification, it targets buyers assembling mid-range gaming or everyday productivity systems where value and stability matter more than modular cabling or headroom for multi-GPU setups. Because it meets the ATX 3.1 specification, the unit is designed to handle short-term power excursions of up to 200% of its rated wattage, which helps it cope with the transient spikes drawn by modern graphics cards. A single high-amperage +12V rail paired with a DC-to-DC converter design supports steady voltage regulation across connected components. Cooling comes from a 120mm fluid-bearing fan, while a Smart Zero Fan mode keeps the fan idle at lighter loads to reduce noise. A 105 degree C-rated main capacitor and a full protection suite – OCP, OVP, UVP, OPP, SCP and OTP – round out its reliability profile. Verifiable specifications, per the supplier listing: wattage 550 W; certification 80 PLUS Bronze; connectors 2x PCIe 6+2-pin, 4x SATA and 4x peripheral 4-pin; model PS-SPD-0550NNFABD-3; warranty 5 years. The non-modular design uses flat black cables to simplify routing. It is best suited to single-GPU mid-range builds; buyers planning high-end or multi-GPU workstations should consider a higher-wattage, modular power supply instead