Testing (continued):
The first set of charts takes a look at the two power supplies over a thirty minute period while the system was run from the idle to the load condition described. The chart indicates that a total of sixteen readings were taken at two minute intervals, with the first two readings being at idle, and the next fourteen being at load. The times are approximate, as I would not take load readings if the software was transitioning between load tests, and because I could only read one rail at a time. I would connect to the 12V rail - wait for it to stabilize - take a reading, and then repeat the process on the 5V and 3.3V rail, making sure to get back to the 12V rail in about two minutes.
Let's start by looking at the 12V rail. The initial reading was fairly high (12.42V), and it only got higher under load (12.45V max). The deviation was only 0.24%, but the values at idle or load are closer to the high limit of 12.6V than I have ever seen. Perhaps I need to identify which potentiometer is for the 12V rails, as this unit seems to be able to regulate the 12V rail acceptably, but it just needs to do so at a lower value.
On the 5V rail the readings are close to specification, but cover a larger range (5.02V to 4.92V, or a 1.99% deviation). Something really ugly happened with the Nesteq unit, as the 5V rail reading dropped below the lower limit of acceptability of 4.75V to a low of 4.68V.
The 3.3V rail was perhaps the most lightly tested component, and the results reflect that. The reading was 3.40V at idle and 3.39V at load, which equates to a regulation deviation of 0.29%.
The DC power testing showed that the Rosewill RX630-S-B is a solid performer, now let's take a look at things from the AC side of the line.
