Rosewill Green Series 630 W (RG630-S12) is a great choice for users looking for a good cost-effective solution. Of course there are better power supplies from this power range on the market (Nexus RX-6300, for example), but not at USD 70.
Efficiency was very high (up to 85%) when we pulled up to 60% from its labeled capacity (i.e., 378 W). Above that efficiency dropped, but still above the 80% mark. Voltages w
ere always inside the allowed range, the same thing happening with noise and ripple.
The number of cables and connectors is satisfactory for users looking for a power supply on this range. The only thing we would do differently was to use 18 AWG wires instead of 20 AWG on the peripheral and SATA cables.
Due to its good cost/benefit ratio we are giving this power supply our “Golden Award.” Of course the price was the item that most helped with this decision.