Enermax D.F. 12 Revolution 850W White PSU Review

Power Efficiency and Ripple Testing

Voltage Ripple and Efficiency Testing

When reviewing new power supplies at OC3D, we use our dedicated SunMoon PSU Tester, one of the most expensive (if not the most expensive) tools in the company’s arsenal. Here we can see exactly how well a unit functions. We look at both a PSU’s efficiency and power stability. To do this, we utilise bespoke PSU testing equipment to give us an in-depth look at each power supply’s performance. This kind of data collection is not possible when using a PSU with standard PC components.

Power Efficiency

Enermax D.F. 12 Revolution series performs as expected in our efficiency tests. The PSU is 80+ Gold rated, and it delivers similar efficiency levels to similar units. Even so, it is worth noting that the 850W model is notably more efficient than its 750W counterpart.

Voltage Ripple

Voltage ripple is often underlooked by consumers, being best described as the stability of specific voltages that the PSU delivers. A PSU with bad ripple will see voltages vary a lot more. In extreme cases, this can can damage components or shorten their lifespans. Voltage ripple stability is one of the many reasons why you should buy a high-quality power supply. That means buying from a reputable brand and avoiding anything that isn’t 80+ certified.

An important thing to note here is that none of the PSUs in this graph are “bad”. Even bottom of the chart units like the original Corsair RM1000 (2014) bring usable within your system without any issues. We used this specific power supply within one of our main workstations for years, and we had no trouble with it. As we said before, only extreme levels of voltage ripple is dangerous.

When it comes to ripple, the Enermax Revolution D.F. 12 850W delivers strong results. No, this PSU doesn’t sit amongst the best power supplies that we have tested, but it keeps ripple under the 20 mV level. There are many 80+ Gold rated units that have much higher levels of ripple than that.

Mark Campbell

Mark Campbell

A Northern Irish father, husband, and techie that works to turn tea and coffee into articles when he isn’t painting his extensive minis collection or using things to make other things.

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