TechPowerUp posted a review on the Corsair RMi Series 650 W
A quote from the article:
The RM650i is a high-end PSU from Corsair with a digital interface, amazing performance, and silent operation. The cherry on top is the ten year warranty, which is now provided with all Corsair AXi, HXi, RMi, and RMx models.Corsair RMi Series 650 W @ techPowerUp