Efficiency

Using the efficiency results from the previous page, we plotted a chart showing the efficiency of the SS-460FL at low loads and at loads equal to 20-110% of the PSU's maximum rated load.



At low loads, the SS-460FL manages to outperform its bigger brother, taking over the first place in our charts, but the latter takes first place, right in front of the SS-460FL, with normal loads. The SS-460FL is definitely among the most efficient units we have ever tested.

Efficiency at Low Loads

In the next tests, we measured the efficiency of the SS-460FL at loads much lower than 20% of its maximum rated load (the lowest load that the 80 Plus Standard measures). The loads that we dialed were 40, 60, 80, and 100 W (for PSUs with over 500 W of capacity). This is important for settings where the PC is in idle mode with power saving turned on.


Efficiency at low loads is absolutely fantastic. The unit registered close to 85% efficiency with a 40 W load and cracked the 88% barrier with 60 W! Such top-notch performance clearly shows the benefits of Platinum efficiency in a middle capacity PSU. The SS-460FL plays in its own field at such low loads; none of the higher capacity PSUs can reach its efficiency levels.

5VSB Efficiency

The ATX spec states that the 5VSB standby supply's efficiency should be as high as possible and recommends 50% or higher efficiency with 100 mA of load, 60% or higher with 250 mA of load, and 70% or higher with 1 A or more of load.

We will take four measurements: one at 100, 250, and 1000 mA each, and one with the full load that the 5VSB rail can handle.


The 5VSB rail achieved very high efficiency readings, which is something we rarely see on this rail. All readings were above 70% and the last two even surpassed the 80% mark - definitely noteworthy.

Power Consumption in Idle & Standby

In the table below, you will find the power consumption and the voltage values of all the rails (except -12V) when the PSU is in idle mode (powered on but without any load on its rails) and the power consumption when the PSU is in standby mode (without any load at 5VSB).


The SS-460FL has pretty low energy consumption in standby and passes the ErP Lot 6 2013 requirements with flying colors. Nothing more to ask of here!

Delta Temperature

The following chart illustrates the delta difference between input and output temperature. The following results were obtained at 37°C - 45°C ambient.