SPCR are no strangers to building silent systems, as Ryan can attest to after reviewing the Puget Systems Serenity PC, so torture testing a fanless PSU is right up their alley.  They have assembled several PSUs from different manufacturers, the Seasonic X-400 Fanless, Silverstone ST40NF, Silentmaxx MX-560, SilenX Luxurae 460 (FSP Zen 400W) and the Coolmax CF-480B. 

From that array of PSUs the Seasonic X-400 Fanless took top billing, no surprise as not only did SPCR like it in their full review, Lee loved it when he reviewed it here at PC Perspective.


“A roundup torture test of samples from every fanless power supply line in the marketplace instigated by the Seasonic X-400 Fanless, which cruised through 15 hours of full-load operation at nearly 60°C temperature in the “case”. Which fanless PSUs can actually deliver rated power with virtually no forced airflow? ”

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