Our load tests utilize a couple of FAST ATE active load testers and a variety of other equipment such as an oscilloscope, power conditioner, temperature probe and a power consumption meter. You can read more about our standard testing approach here.
The tests performed are based around six conceivable setups that are out there and progressively load down the PSU up to the power supply's limits or 1000W, whichever comes first. Since our test equipment's limits lower than that of the ADATA HM-1200, we can only test it to the 1000W.
Looking at the results above, we can see that ADATA has done quite well for their first entry into the power supply market. The voltages are quite stable, especially for such a high wattage power supply. The 3.3V and 5V rails barely change throughout the entire series of tests. As is usual, the 12V rails showed the largest change in voltage as the loads increased, but were still well within ATX specification.
Even though we were not able to load the HM-1200 to full capacity due to the limitations of our test equipment, it is relatively safe to say that even under full load our sample would have still been in specification due to the linear voltage degradation that is typically experienced in most PSU's.
Ripple on the 12V lines is a little higher than we like to see, reaching a maximum of 48mV peak to peak when loaded to ~83% capacity and still well within the ATX specifications. If we were to increase the load closer to the maximum capacity of the HM-1200, it would surely climb. However, the readings that were taken when fully loading our test equipment weren't anywhere close to the specification limits.
With the test results that were achieved with the HM-1200, ADATA has proven that they are serious about entering the power supply market. The HM-1200 exhibited solid voltages throughout all of our tests and didn't miss a beat. It boasts a ton of power and the heavy duty rail will handle almost anything you throw at it. Topping things off, ADATA has a perfect balance of cabling and connector availability to make sure that you can put all the power to good use. Add in the quality that the power supply shows inside and out, the three year warranty, and a price of $239 USD, and you can see that ADATA has produced one seriously solid PSU.
Unfortunately it would seem that producing one of the HM-1200 PSU's in your hand is one of its biggest downfalls. The HM-1200 just isn't available in the USA and can barely be found overseas. There is also an issue with the packaging as the cable and connector availability chart doesn't quite match the contents of the box we received. While this may appear as a minor discrepancy, it could easily be a huge problem if the HM-1200 was purchased because the connectors listed specifically matched the application in which it was needed, but weren't in the box.