A 450W SMPS (Switched Mode Power Supply) is an electronic device used to convert AC (Alternating Current) to DC (Direct Current) with high efficiency, providing a regulated output of 450 watts to power various electronic devices, especially desktop computers. The SMPS is known for its compact size and light weight compared to traditional linear power supplies.

Key features typically include:

Input Voltage: 100-240V AC, 50-60Hz

Output Power: 450W, often with multiple DC outputs (e.g., +12V, +5V, +3.3V)

Efficiency: Usually around 80% or higher, often compliant with 80 PLUS certifications

Protections: Overvoltage, overcurrent, short circuit protection

Cooling: Built-in fan for heat dissipation

Connectors: Multiple output connectors for motherboard, CPU, GPU, hard drives, etc.

Form Factor: ATX standard size, typically used in desktop PCs


It is ideal for powering mid-range gaming or productivity PCs that do not require extremely high power output but need stable, reliable power.