Enermax MAXREVO 1350w PSU Review
Simulated Load Results (Graphs)
Because I understand that not everyone enjoys getting a headache from trying to read the tabulated results over on page 4, this page is dedicated to some pretty looking graphs that sum up the majority of the results in an easily digestible format.
When viewing the graphs you need to bear in mind that the highest and lowest values on the Y-axis (voltage) represent the maximum and minimum voltages allowed by ATX specifications. If the results should fall outside the graph at any time, then that's an instant FAIL. However, merely staying inside these boundaries does not necessarily indicate a good PSU. In order to display truly great voltage regulation, a PSU must stick as closely as possible to the thick white horizontal line (ideal voltage) as possible.
You will also notice that the graph is split into three sections as depicted by the Green, Amber and Red backgrounds. These indicate normal usage (green), heavily uneven load distribution (amber) and overloading of the PSU (red). For the most part all we need to worry about is how it performs in the green section, but good performance in the other sections will undoubtedly earn the PSU extra brownie points.
Starting with the +3.3v rail it's actually quite a disappointing result compared to what we've seen from some of Enermax's previous PSU's. Not only does the voltage start off quite high in test #1 at 3.41v, but by the time the unit is under full load it has dropped 0.15v down to 3.26v. Th second (+12v weighted) cross-load test is also quite disappointing with the voltage coming extremely close to the top of the graph, showing that the MAXREVO doesn't particularly like running with no load on its +3.3v rail.
Interestingly, the +5v rail is much more stable during the normal load tests with only a 0.08v difference from the idle test #1 to the fully loaded test #4. The voltage does still spike slightly in the cross-load test #2, but this is only minor in comparison to the +3.3v rail result.
The +12v rail shows quite a similar gradient to the +5v rail but instead drops a total of 0.26v from idle to full load. Although not the best result I've seen from a PSU, the MAXREVO is certainly capable of holding its own against the competition. The most impressive item of all though is the +12.v output when the PSU is heavily overloaded to 1705w - 11.92v, very nice :)
They say that an image says a thousand words, and for the first time ever I feel it prudent to include a smiley in an OC3D review:
Yes, jaw dropping is one way to describe the efficiency of this unit. 94-95% at middling loads is simply amazing and will certainly make a noticeable difference in both heat output, noise levels and possibly the energy bills for those moving from an 80% efficiency unit over to the MAXREVO. You really can't get much better than this without going against the laws of physics and making a PSU that gives you free power!