The new Corsair AX860i simply sets new performance standards. Its performance cannot be matched by any other PSU of similar capacity that I have tested in the past, and the features it packs are nothing less than amazing. But let us take it from the beginning. Efficiency, voltage regulation, and ripple suppression are ground-breaking. The rails of the PSU stayed ultra-stable throughout all load ranges with the +12V rail only registering 0.12% voltage regulation at 110% load, and ripple did not exceed 25 mV at any time! The PSU operated in fanless mode at lower loads despite the high ambient I maintained inside the hotbox, and only at 40% load did the fan start to spin at very low RPM. I really had to stress the PSU in order to make the fan spin at high RPM, which will be nearly impossible inside of a chassis with good airflow. The Corsair Link software provided very accurate power readings and did, in many cases, report efficiency that was close to the real reading. Corsair apparently made some last minute changes, or this sample's control board featured components that have a smaller error margin compared to the AX760i I tested some days ago; the AX760i provided efficiency readings that were, once 50% load was applied, way off.

To sum up, The AX860i is the ideal choice for you if you have the money and simply want the best available PSU with a capacity below 1kW. It provides amazing performance, is fully modular, features a semi-fanless mode for overall quiet operation, can be controlled and monitored through software, and is, most importantly, backed up by Corsair with an extra-long seven-year warranty; you will not have to worry about another PSU for a very long time.