Load 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. 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 start with our 120v, 100v, Torture, and 80 Plus Tests.
120v and 100v Load Testing Results
Test #1 is equal to approximately 25% of the rated capacity of the SilverStone NJ600 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. The results of Test #1 show the main positive DC output rails starting off above nominal with the 12v rail differing the most from nominal. The +5vsb, however, is coming in well below nominal but it is still in specification. The efficiency for this unit is starting off at an excellent value of 89.78% at 120v AC input and 89.30% at 100v AC input. We see a housing temperature of 49C at 120v AC input and 51C at 100V AC input.
Test #2 is equal to approximately 50% of the rated capacity of the SilverStone NJ600 at 45c. This makes Test #2 equal to 301W 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. Test #2 sees almost no changes in DC output voltages relative to what we saw with Test #1. Indeed, the only changes we see are the 0.01v drop on the 3.3v and 5v rails followed by the up to 0.02v increase on some of the 12v connectors. The efficiency has moved up a good bit to 93.32% at 120v AC input and 92.18% at 100v AC input. We see a housing temperature of 51C at 120v AC input and 54C at 100V AC input.
Test #3 is equal to approximately 75% of the rated capacity of SilverStone NJ600 at 45c. This makes Test #3 equal to 463W by loading the 12v rail to 33a, the 5v rail to 6a, the 3.3v rail to 4a, the +5vsb to 2a, and the -12v to 0.3a. Test #3 sees mixed changes. The 5v rail has dropped by 0.01v while the 3.3v rail has dropped by 0.02v. The 12v rail has increased by up to 0.02v. The efficiency in Test #3 moves down to 92.71% at 120v AC input and 91.79% at 100v AC input. We see a housing temperature of 54C at 120v AC input and 57C at 100V AC input.
Test #4 is equal to approximately 100% of the rated capacity of the SilverStone NJ600 at 45c. This makes Test #4 equal to 613W by loading the 12v rail to 47a, the 5v rail to 3a, the 3.3v rail to 2a, the +5vsb to 2a, and the -12v to 0.3a. In the final regular test, we see the 12v rail rise by up to 0.02v. The minor rails, however, see a decrease of 0.01v on the 5v rail and no change on the 3.3v rail. The efficiency has dropped just a bit in this test as we see it at 92.20% at 120v AC input and 91.11% at 100v AC input. We see a housing temperature of 61C at 120v AC input and 62C at 100V AC input.
Torture Test
The Torture Test is equal to approximately 80% of the rated capacity of the SilverStone NJ600 at 45C. This makes the Torture Test equal to 496W by loading the 12v rail to 35a, the 5v rail to 7a, the 3.3v rail to 5a, the +5vsb to 2a, and the -12v to 0.3a. At the end of the Torture Test, the SilverStone NJ600 is still doing an excellent job. The DC output voltages are generally in line with what we have been seeing in the 120v load tests. The efficiency is excellent once more as we see a value of 92.14% and the housing temperature is 67C.
80 Plus Load Testing Results
As we see here, the SilverStone NJ600 posts efficiency values of 92.15%-93.21%-91.49% efficient using 80 Plus’ load testing parameters. This puts the unit right under the 80 Plus Titanium standard in the 50% test as it fell 0.79% short. However, we do use different equipment than 80 Plus for our testing and there is always a bit of component variation.
Load Testing Summary
Today, the SilverStone NJ600 proved to be just about an outstanding power supply. When we look at the voltage regulation, we see that the NJ600 had peak changes of 0.05v on the 12v rail, 0.03v on the 5v rail, and 0.03v on the 3.3v rail. Now, while we do not have comparable products to look at today, these are outstanding numbers in an absolute sense and then more so when you consider the fact that this unit is fanless. Given what else is currently on the market, this unit would easily be competitive to top of its class in a relative sense. When we look at the efficiency side of things, we see that the NJ600 ranged from 89.78% to 93.32% efficient at 120v AC input and 89.30% to 92.18% efficient at 100v AC input which is outstanding. On that same note, this unit fell a bit short of the advertised 80 Plus efficiency values so, it seems that, the 80 Plus Titanium rating for this unit is going to be borderline for retail units. Lastly, the housing temperature peaked at 61C at 120v AC input, 62C at 100v AC input, and 67C during the Torture Test. With excellent starting results in today’s testing, let’s move on to the Transient Load Tests.