Pros, Cons And Final Verdict
EVGA has a very powerful advantage in the PSU space: its relationship with Super Flower, one of the best OEMs out there. Along with Seasonic, Super Flower pushes the performance of analog circuits to levels that we couldn't imagine a few years back. The SuperNOVA 850 P2 is an amazing PSU featuring tight load regulation on all rails, high efficiency under light and normal loads, excellent response to transient loads and, on top of that, it boasts impressive ripple suppression.
The cherry on top is quiet operation, especially with ECO mode enabled. Although EVGA uses a powerful fan on this unit, its profile is relaxed. And with the semi-passive feature activated, the fan won't spin at all under moderate loads and normal operating conditions. Given the high-quality capacitors this PSU hosts on its main PCB, we believe that prolonged passive operation doesn't pose a reliability threat. Even if it did, you don't have anything to worry about thanks to the 10-year warranty. EVGA is the only company that dares to offer such a long endorsement of its quality. The competition tops out at seven years.
If you can't spend the amount of money EVGA is asking for its 850 P2, then the company's Gold-rated 850 G2 remains an excellent choice. However, if you want the top 850W PSU (at least until we test the Titanium-rated 850 T2), then the Platinum SuperNOVA is the way to go. It packs all the necessary features for a PSU that deserves our Editors' Choice award: top performance, compact dimensions, silent operation, loads of cables and connectors and fully modular cabling. The not-so-efficient 5VSB rail and the slightly lower-than-required hold-up time aren't enough to spoil the good overall picture.
We do expect Super Flower and EVGA to address the few issues we spotted, though. Slightly boosting the hold-up time won't be a problem, although this could hit efficiency a bit since more energy will be lost on the larger bulk capacitors needed in the APFC converter. On the other hand, a stronger 5VSB rail with increased efficiency won't affect the unit's performance elsewhere. To the contrary, it'll help achieve a higher overall performance score. There's room for improvement in every product, and when you're a well-educated enthusiast, you'll always find something that could have been done better.