Conclusion: Recommendations for Hiper and Corsair
Our editorial team’s recommendation is the Type R MKII 680 from Hiper. It is a solid power supply which has an interesting, unique feature—USB interfaces.
The voltages provided by this model are stable and constantly within specifications. In addition, the unit has a commendable level of efficiency in normal operation. It only drops very low in standby mode due to the integration of the USB interfaces.
The best buy recommendation is the older HX520W unit from Corsair. For right around $120, you get a solid power supply with modular, flat, flexible cables that are easy to install.
Despite the older design, the efficiency of the power supply can still impress even today, particularly under partial load and during standby.
The Fortron and the Everest 600 power supplies came up with a good idea, enabling partially passive operation. But our high expectations for the feature were not met. Their fans start up at a lower load than is specified and becomes very loud in the transition range.