Enter your CPU, GPU, RAM, storage drives, and fans. The calculator will recommend a (e.g., "450W 鈥� 550W").
Since Windows cannot read this data, you must look at the physical sticker on the hardware. how to check power supply wattage windows 10
If you are using a pre-built system from a brand like Dell, HP, Lenovo, or CyberPower, you can find the exact factory-installed PSU wattage online without opening the case. Enter your CPU, GPU, RAM, storage drives, and fans
If you absolutely cannot open your case, you can try to find the model number and Google it. Enter your CPU
Go to a trusted PSU calculator website: