Test Setup

Primary Rails Load Regulation

5VSB Regulation

Hold-up Time

In the following screenshots, the blue line is the mains signal, the green line is the "Power Good" signal, and the yellow line represents the +12V rail.

Inrush Current

10–110 % Load Testing

In the Power column above, you will find the readings the NZXT CAM application provides in brackets. As you can tell, its readings are not accurate enough, especially at higher loads. There is also no information on power draw (AC watts), which is a shame since that means there are no efficiency calculations, which is what most users would like to keep track of. The additional hardware required for power draw readings would have probably increased costs even further, but DC power readings alone simply aren't enough in our opinion.

Noise output is kept low at up to and including the 30% load test. However, the PSU starts to make its presence felt past that mark. With 70% of its maximum-rated-capacity load or more, the fan spins at full speed, where it produces 43.9 dB(A). The fan-speed profile definitely needs fixing to allow for a quieter operation. This is an efficient platform, so there is no need for as much airflow. NZXT apparently sought to be on the safe side since this product is covered by a ten-year warranty. That said, noisy system components aren't looked upon kindly by today's standards.

Light Load Testing

Efficiency

5VSB Efficiency

The 5VSB rail is not that efficient. Seasonic should upgrade this rail's regulation circuit in the next version of the Focus platform.

Power Consumption in Idle and Standby

Fan RPM, Delta Temperature and Output Noise

The following results were obtained at 40–46 °C ambient.





The following results were obtained at 30–32 °C ambient.