The new Enermax NAXN 82+ 550 W provides a terrific price/performance ratio for the user who is looking for an affordable power supply with good efficiency for a mainstream PC.
During our tests, efficiency was between 82.6% and 86.5%, which is perfect for the mainstream user. As you know, there are several power supplies with the 80 Plus Bronze certification that can’t deliver 82% efficiency at full load under high temperatures. Noise and ripple levels were very low all the time. Voltage regulation could be a little better and the unit could have more SATA and peripheral power connectors, but at USD 75 we can’t complain.