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be quiet! SFX L Power 600W PSU Review

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 were calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature was between at 30°C (86°F) to 32°C (89.6°F).

Load Regulation Charts

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Efficiency Chart

From around 140W to 480W on the +12V rail, and with less than 70W on the minor rails, the SFX L Power 600W achieves efficiency levels between 90-92%. That's fairly good performance.

Ripple Charts

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Infrared Images

We applied 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).

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Given this unit's high efficiency, we aren't surprised by the low temperatures inside after operating in passive mode for 10 minutes at half-load.


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