Unless you own a "Digital PSU" (like the Corsair i-Series or Thermaltake iRGB lines) that connects to your motherboard via an internal USB header, Windows has no way of "talking" to the power supply. If you do have a digital PSU, you can use the manufacturer's software (like ) to see the exact wattage in Windows 11. Summary Checklist
The only way to see the "Max Wattage" rating. check psu wattage windows 11
Here is the complete guide to determining your PSU wattage and monitoring your power draw on Windows 11. Method 1: The Physical Inspection (Most Accurate) Unless you own a "Digital PSU" (like the
Windows 11 comes with a built-in tool called PowerShell, which allows you to check your PSU wattage. Here's how: check psu wattage windows 11