Digital PSU beats 80 PLUS Platinum. http://www.bit-tech.net/news/hardware/2014/01/08/corsair-ax1500i/1
Given the move towards energy efficiency by Blue, Green and (to a certain extent) Red, I'd be surprised if a PSU like this was ever really put under pressure. Fanless <450W is a great move though.
'When we released the AX1200i, the world’s first digital ATX PSU, we defined the new standard for PSU performance, efficiency, and customisation,' boasted Aaron Neal, product manager of PSUs at Corsair, at the unveiling. 'Now with the AX1500i's evolved digital architecture we've raised the bar again, creating the most efficient and technically advanced PSU available for the uncompromising PC enthusiast.' Erm, the 1200i is one of the worst high-end PSUs on the market. Horrible whine from most units, and a lot of people were making them trip over with 3 card configurations that the previous AX1200 would handle with ease. If this one is still no longer made by Seasonic I'd be interested to see what else has changed.
Erm I have the AX1200i and can't fault it at all I get no horrible Whine and the PSU is very stable, will be interesting to see how good or bad this one is.