Knowing how to check your computer power supply wattage is important for ensuring that your computer has a sufficient and stable power supply. The power supply unit (PSU) is responsible for converting alternating current (AC) from your wall outlet to direct current (DC) that your computer components can use. If the PSU does not provide enough wattage, your computer may experience random shutdowns, crashes, or other performance issues.
To check your computer power supply wattage: