Are computer power supply ratings the input or output wattage? - Super User

After looking at some of the draws of the typical desktop computer system I am confused by power supply ratings which seem to be excessive. The big item in a desktop computer, the CPU typically ha

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80 PLUS GOLD CERTIFIED: E Series PSUs provide long-term durability and reliability MONITOR YOUR PERFORMANCE: Power indicators monitored and tracked

NZXT E850 - NP-1PM-E850A-US - 850-Watt ATX Gaming Power Supply (PSU) - Fully Modular Design - 80 Plus Gold Certified - Silent Operation - Digital

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Ablecom SP382-TS 380Watt Super Micro Computer PWS-0050-M Power Supply