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Riotoro 1200W Builder Edition PSU Review

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 1500 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


There are two small regions where the efficiency levels exceed 92%. In the majority of cases this is a clear indication of a “good” 80 PLUS Gold unit.

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 320×240 IR resolution (76,800 pixels).

We measure high temperatures on the DC-DC converters, because we push them enough with close to 10 Amps load on each of the minor rails. The temperatures on the rest of the parts are low enough given the operating conditions.

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