There is no software that can tell you exactly what model of power supply is installed. However, tools like or Open Hardware Monitor can tell you how much power your system is currently drawing .
This sticker, often called the "spec label," will list the manufacturer (e.g., Corsair, EVGA, Seasonic), the specific model name, and the total wattage. Pay close attention to the +12V rail rating if you are checking for GPU compatibility. Method 2: Check Your Documentation or Order History how to check what power supply you have
If you aren’t comfortable opening your PC, your digital paper trail is the next best thing. There is no software that can tell you
Here is exactly how to check what power supply you have using three different methods. Method 1: The Physical Inspection (Most Accurate) Pay close attention to the +12V rail rating
Some modern, high-end power supplies feature a USB connection that plugs into your motherboard. These "digital" PSUs can report their status to software.