How much power are you on PC

--- Guys, a layman's question: Is there any software that
check how much power supply is being consumed by HW machine
I wonder how much I have reservations at source !!!! 8)

software --- I do not know, but you just add up the consumption of all components of your PC that you know if your source has reservations, of course, this calculation assumes that all peripherals are being used at the same time and at its maximum consumption, but it's to get a sense.