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
The efficiency sweet spot is between 150W and 450W at +12V, with load on the minor rails staying below 60W.
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).
Electrolytic capacitors close to the +12V heat sinks get quite hot, and the same goes for polymer caps in the same area. Of course, those polymer caps are much more resilient in the presence of high operating temperatures. That doesn't mean they're immune to the effects of heat, though.
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