How to check what PSU your PC has To check the power supply inside your PC ... Throw in 80 Plus efficiency ratings and this ...

A computer power supply converts AC into multiple DC voltages. For example, 12 volts is commonly used for drives, while 3.3v and 5v are used by the chips and other motherboard components.

Thermaltake has a handful of new Toughpower PSUs on display at its CES 2025, and I've been over there to check them out.