How To Check Your Power Supply Wattage ((free))

Once you have the PSU model number (from step 1), search:

The only reliable way is to read the label on the PSU itself. If your PC is prebuilt and under warranty, check the manufacturer’s spec sheet online instead of opening the case.

Look for a label that lists the Total Power , Max Wattage , or Continuous Power (e.g., "650W" or "750 Watts"). 2. How to Check Without Opening the Case how to check your power supply wattage

Checking your power supply unit (PSU) wattage is a critical step before upgrading your graphics card or troubleshooting system crashes. Unlike your CPU or RAM, your , meaning there is no way to see it directly in the BIOS or Task Manager.

Use an online (e.g., OuterVision, Cooler Master, Newegg). Enter your CPU, GPU, drives, etc. – it estimates recommended wattage, but not your actual PSU’s rating. Once you have the PSU model number (from

: Remove the side panel (usually held by two screws).

If you're using a pre-built computer or laptop, you can check the documentation that came with it. The wattage of the power supply may be listed in the: Use an online (e

: Look for "Total Power," "Max Wattage," or a large number followed by "W" (e.g., 650W). 2. Check Without Opening the Case