How To Find Power Supply Wattage (2026)

By using one of these methods, you can easily find the power supply wattage of your computer or device.

Add up the power requirements of each component and add a 10-20% buffer to account for any inefficiencies. For example: how to find power supply wattage

Look for a sticker on the back of the PC case with a model name. Search "[Model Name] specs" online. By using one of these methods, you can

The PC shuts down and restarts without warning during gaming. By using one of these methods

Are you checking your wattage to prepare for a upgrade, or are you troubleshooting a system crash ?