SeaSonic M12II 380W vs SeaSonic Prime Fanless PX-500 500W

A side-by-side spec comparison of the SeaSonic M12II 380W and the SeaSonic Prime Fanless PX-500 500W. We line up every specification, highlight the winner of each, and tally an overall verdict so you can decide which power supply is right for your build.

Side-by-side specification comparison of SeaSonic M12II 380W and SeaSonic Prime Fanless PX-500 500W.
Specification	SeaSonic M12II 380W No price data	SeaSonic Prime Fanless PX-500 500W $128.02 Buy on Amazon
Modular	non-modular	full
Wattage	380W	500W
Efficiency	80+ Bronze	80+ Platinum
Form Factor	ATX	ATX

SeaSonic M12II 380W

specs won

SeaSonic Prime Fanless PX-500 500W

specs won

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