NZXT HALE90 850w Review
Simulated Load Results (Graphs)
For those of you not familiar with the layout of our relatively new graphs, 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.
For a better understanding of now we conduct our PSU testing and how these results were obtained, please be sure to check out the tabulated results over on the next page.
Referring to the OC3D PSU Certification whitepaper for guidance, we can see that the +3.3v rail on the NZXT passes the idle test with an output of 3.35v. Unfortunately though, when the load is increased to 100% the output voltage dips to 3.26v thus falling outside the ±2% allowable margin.
Of course, if we forget about the certification tests for one minute, this result is still very reasonable. And given that most modern PSU's barely make any use of the +3.3v rail anymore, it is certainly nothing to worry about.
The +5v rail tells a similar story to the +3.3v rail with idle voltages just about within OC3D'd certification specs, but then falling outside the requirements when 100% load is applied. Of course, the average user of this PSU is unlikely to run it at more than 75% load most of the time, and as we can see from the results in T3 an output voltage of 5.06v is pretty much right on the money.
Moving on to the most important rail of them all, we can see by just looking at the flatter line on the graph that this is where NZXT have paid the most attention. The idle voltages are reasonable and 100% load voltages only just fall outside of certification requirements by 0.02v. Most impressively though, even in the TMax (Maximum Load) testing, the NZXT refuses to dip below +12.00v, showing that it really can deliver.
Finally we arrive at efficiency - and there's certainly no arguing that this is an 80PLUS GOLD level PSU. Throughout all of the normal tests, the unit managed over 91% efficiency, and only presented with a heavy crossload in TX1 did the efficiency drop to 84% (which is still better than most PSU's). Good work NZXT.