Efficiency

Using the results we gathered so far, we plotted a chart showing the PSU's efficiency at low loads and loads ranging from 10 to 110 percent of the maximum-rated capacity.




Efficiency at normal loads is not as good as the competition, but the difference is not that high. At light loads, especially 2% load, the PSU performs well.

10%–110% Load Testing

These tests reveal the PSU's load regulation and efficiency levels under high ambient temperatures and show how the fan-speed profile behaves under harsh operating conditions.


There are no problems at high loads and sky-high operating temperatures. I have additionally added two tests, CL2 and CL3, where I individually load the minor rails to see if there is any problem while they deliver the full load. Most PSUs with DC-DC converters for the generation of the minor rails will do well in these tests.

Light Load Testing

In the following tests, we measure the PSU's efficiency at loads significantly lower than 10 percent of the maximum capacity—the lowest load the 80 PLUS standard measures. This is important for when a PC is idle with its power-saving features turned on.


Efficiency levels are high at light loads.

Ultra-Light Load Testing

The applied load in this test is only 10 W for PSUs with 500 W and less capacity. This is because we dial in 2% of the maximum-rated capacity for all other PSUs and only run this test with 115 V input.


The PSU exceeds 77% efficiency with 2% load, easily meeting the corresponding requirement of the ATX specification.

5VSB Efficiency

I would like to see a more efficient 5VSB rail.

Power Consumption in Idle and Standby

Power consumption is a bit high in standby with 230 V input. Ideally, it should be below 0.1 W.