How To Check Computer Power Supply Wattage

If the label is unreadable (e.g., modular PSU with obscured text), estimate the required wattage to infer the existing PSU’s class.

The most foolproof method is to look at the on the power supply itself. Open the Side Panel: Remove the side of your PC case. how to check computer power supply wattage

If you cannot open your case, you can calculate your to get a ballpark idea of what PSU you likely have or need. If the label is unreadable (e