Performance Analysis

Thankfully, the Aerocool unit holds up very well in every test. Variance on the critical +12V rail never varies by more than one percent, and efficiency is where we would expect it to be from a PSU with this rating. It actually edges out the EVGA PSU on average here, but the difference is marginal, and in the lower load tests it's the EVGA one that comes out on top.

Ripple is well managed, and a peak reading of just 28.4 mVpp at full load is something to be proud of. EVGA definitely has the upper hand here, but both PSUs are still considered fantastic, and you need only concern yourself with differences if you are using the power supplies for competitive overclocking.

Noise output was very low throughout testing, and again the difference between this PSU and EVGA's was minimal. The fan started to spin at about 400W load in our testing, meaning it's silent until then. This is a little lower than the 60 percent claim from Aerocool, but there are many different methods of applying and calculating load, as it can depend on the rails used.

Conclusion

With great build quality inside and out, fantastic electrical performance including top-notch efficiency, and a generous selection of cables for the fully modular design, there is no real flaw with the P7-850W. Rated to 50°C and totally silent up to a respectable level of load, there's clearly a lot of value here.

The only issue as far as we can see is that EVGA's excellent competitor is available for £15 or so less and comes with a 10-year warranty versus the seven here. That said, Aerocool's advantage lies in its RGB fan, which we know will be important to some given it can be controlled through Aerocool's optional hub or your motherboard. The unit also uses flat, black cables rather than the thicker braided type from EVGA, which some may prefer as well. As such, the P7-850W is a great candidate for a high-end, RGB-themed build.