Cross-Load Tests And 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.
Load Regulation Charts
Rosewill's Tokamak 1500 does achieve over 94% efficiency, though not in the middle region as the corresponding 80 PLUS certification demands. The sweet spot falls between 370W and 590W with load on the minor rails staying below 35W.
Toward the end of the cross-load tests, we took some photos of the PSU with our modified FLIR E4 camera that delivers 320x240 IR resolution (76,800 pixels).
Temperatures inside the PSU stay pretty low thanks to a combination of high efficiency and a powerful fan.