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
There is a small region with the efficiency going over 92%. This is something that we usually see in units with higher efficiency certifications (e.g. Platinum).
The 650W model also surpasses 92% efficiency, however this operating region is smaller compared to its big brother.
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).
The temperature of the bulk cap stays low, however the VRMs get quite hot since we apply more than 10 Amps load in each of the minor rails. The temperatures of the polymer caps on the VRMs’ daughter-board are increased as well, but this type of caps are tolerant to high temperatures.