How To Check Power Supply Wattage Windows 10 'link' -

You cannot check your exact power supply (PSU) wattage directly through Windows 10. Windows has no software mechanism to read the sticker on the physical hardware inside your computer case.

Press Windows Key + R , type msinfo32 , and press Enter to launch the panel. Locate your System Model and System SKU . how to check power supply wattage windows 10

Remove the side panel of your computer case (typically secured by two thumb screws at the back). You cannot check your exact power supply (PSU)

Unlike your CPU or GPU, the power supply is a "dumb" component. It sends electricity but has no data cable to the motherboard to report its specifications. Windows can only read components that actively communicate (via protocols like SMBus or PCIe). The PSU's wattage is purely a physical property printed on a sticker. Locate your System Model and System SKU

Since Windows cannot read hardware wattage, opening your computer case is the only way to get 100% accurate information.

While Windows 10 cannot read the PSU's total capacity, you can monitor the actual real-time power consumption of your two most power-hungry components—the CPU and GPU—to estimate how large your PSU needs to be.