Seasonic SSR-650PX PSU Review: High Performance Without Breaking The Bank

Cross-Load Tests & Infrared Images

Our cross-load tests are described in detail here.

To generate the following charts, we set our loaders to auto mode through our custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The load regulation deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature is between at 30°C (86°F) to 32°C (89.6°F).

Load Regulation Charts

Efficiency Chart

Although there is a small region where efficiency exceeds 92%, this PSU spends most of its time between 90% and 92%.

Ripple Charts

Infrared Images

We apply half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with our modified FLIR E4 camera that delivers 320x240 IR resolution (76,800 pixels).

Thanks to the high efficiency levels, the temperatures at the unit's internals remain at low levels during our testing session with mid load for ten minutes. Seasonic did well to tune the fan profile for a quiet operation.

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