Transient Testing
For those of you that are curious as to some of the reasoning and equipment behind our PSU testing program here at TheFPSReview, we have put together an introduction for you that shares a lot of the behind the scenes of the program. This program is based on what the author developed at [H]ardOCP and utilizes the equipment bequeathed to the author by Kyle Bennett. The testing we are conducting today is exactly as described in that document and will continue with our Transient Testing.
Transient Test 1
Loaded/Unloaded
12v/5v
Test #1 is equal to approximately 25% of the rated capacity of the FSP Dagger 600W at 45c. This makes Test #1 equal to 149W by loading the 12v rail to 10a, the 5v rail to 2a, the 3.3v rail to 1a, the +5vsb to 2a, and the -12v to 0.3a before the addition of the transient load. The results of Test #1 show a ~240mV drop on the 12v rail and ~50mV drop on the 5v rail when each is directly loaded. At the same time that the load was being triggered on the 12v rail, the 5v rail measured a ~40mV drop.
Transient Test 2
Loaded/Unloaded
12v/5v
Test #2 is equal to approximately 50% of the rated capacity of the FSP Dagger 600W at 45c. This makes Test #2 equal to 299W by loading the 12v rail to 21a, the 5v rail to 4a, the 3.3v rail to 3a, the +5vsb to 2a, and the -12v to 0.3a before the addition of the transient load. The results of Test #2 show a ~220mV drop on the 12v rail and ~45mV drop on the 5v rail when each is directly loaded. At the same time that the load was being triggered on the 12v rail, the 5v rail measured a ~40mV drop.
Transient Load Testing Summary
The Transient Load Tests results for the FSP Dagger 600W are excellent in an absolute sense and, well, every sense. In today’s testing, the Dagger 600W saw the loaded 12v rail post a peak change of ~240mV and the loaded 5v rail post a peak change of ~50mV. The unloaded 5v peak change during the 12v load was ~45mV. In addition to these results being excellent in an absolute sense, these results are easily top of its class in a relative sense as well. So, the Dagger 600W certainly has this aspect of testing nailed! Let’s move on now to see how this unit does in the DC Output Quality aspect of our testing!