How To Check Computer Power Supply Wattage !!install!!
The only authoritative source for a PSU’s wattage is the physically attached to the unit. If physical inspection is impossible (e.g., sealed laptop or OEM small form factor PC), use an online component calculator to estimate the required wattage, then consult the PC’s original build sheet.
If you bought a or ordered your parts online, your wattage is documented in your purchase history. how to check computer power supply wattage