Result Summary

First things first - the EDGE 1300 W passed our tests with zero issues. The main noteworthy things from the results are the very high power factor numbers and the fan operation.

On one hand, even though the EDGE 1300 W includes a semi passive mode which should keep the fan idle for up to 260 W of power delivery, in our heated ambient temperatures even at the 5% load test the fan was already spinning, with the ambient temperature being one of the potential inputs for the fan operation mode.

But even though the fan was spinning, during the full tested range, it did perform extremely quietly, even at maximum rated power and beyond, which, arguably, can be preferred to situations where a PSU stays in passive mode for over 30% of its rated power, but then has a significant increase in noise as the load increases.



The efficiency of the power supply is very good overall. We do seem to miss the expected 94% peak at the 50% mark (with 93.48% instead), but as seen earlier, the harsh testing conditions can often reduce the efficiency levels. Otherwise, the numbers look very solid for an 80 Plus Platinum level power supply with no significant dropoff even going beyond its rated 100 % power combined with very impressive efficiency of 86.52% and 90.25% at the 5% and 10% load tests respectively.

Voltage Regulation

While we definitely have seen tighter regulation on other units (especially on the minor rails), the EDGE's regulation on all three rails is easily within the ATX spec.

Ripple

Ideally you want the DC voltage delivered by your power supply to be a completely flat line when looking through an oscilloscope. However, due to the switching nature of ATX power supplies and the less than ideal real world behavior of all the components involved, we get very small fluctuations in output voltage known as ripple and noise. The ATX spec allows for ripple of up to 120 mV for the +12 V rail and 50 mV for the minor rails.


Ripple control on the PSU looks very good overall being well under the ATX requirements even when going beyond the maximum rated power output. The oscilloscope waveform output of the 110% load test can be seen below.

Short Circuit Protection

Short circuit protection is one of the most fundamental and important protections for a power supply. If a short circuit is detected on any rails, the PSU should turn off to prevent damage to itself and other components.


SCP worked as expected with the unit.