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 is not an efficient platform, and as you can see in the charts above, PSUs of similar capacity leave it behind. The Cooler Master MWE PSUs are pretty efficient because they are based on a capable platform.

10%–110% Load Testing

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


Load regulation is not good, but the PSU at least managed to deliver the full load and even more at over 40 °C without treating me to fireworks, which is something in this price range. Finally, the horrible results in the crossload tests, especially CL1, clearly show that this unit cannot handle unbalanced loads on its rails.

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.


While these results aren't bad, the competition still achieves higher efficiency.

5VSB Efficiency

The 5VSB rail achieves good efficiency numbers.

Power Consumption in Idle and Standby

It would be nice to see standby power below 0.1 W, but it would require additional parts.