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.




This PSU doesn't take the lead in any of the load regions.

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.


High operating temperatures are not a problem, and load regulation is within 1% at +12 V and 5 V. The competition achieves tighter load regulation on all rails, however. I would like to see higher PF readings, too.

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 representing when a PC is idle with its power-saving features turned on.


Efficiency results in this load range are satisfactory.

Ultra-light Load Testing

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


While efficiency isn't quite there with this PSU, the platform can achieve 70% efficiency with 2% load, which is what the newest ATX specification requires. Introducing a new PSU that isn't fully compatible with the current ATX specification is a great shame.

5VSB Efficiency

The 5VSB rail is very efficient. Expect even higher efficiency with 115 V input.

Power Consumption in Idle and Standby

Vampire power with 230 V input is high. I expect a reading below 0.15 W here.