SeaSonic Prime Fanless PX-500 500W vs SeaSonic SS-300TFX Bronze 300W

A side-by-side spec comparison of the SeaSonic Prime Fanless PX-500 500W and the SeaSonic SS-300TFX Bronze 300W. 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 Prime Fanless PX-500 500W and SeaSonic SS-300TFX Bronze 300W.
Specification	SeaSonic Prime Fanless PX-500 500W $128.02 Buy on Amazon	SeaSonic SS-300TFX Bronze 300W $128.02 Buy on Amazon
Modular	full	non-modular
Wattage	500W	300W
Efficiency	80+ Platinum	80+ Bronze
Form Factor	ATX	ATX

SeaSonic Prime Fanless PX-500 500W

specs won

SeaSonic SS-300TFX Bronze 300W

specs won

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