The maximum level of efficiency for this model is achieved at half of the maximum load, where we measured 86%. Under full load, the value drops to about 84.5%, while at low loads (20%), the power supply achieves a comparatively low efficiency of 82.4%—the lowest in our test field. Here, we need to take into account the fact that the design of this power supply unit is older than that of the other models.
In testing with our 35 watt PC, the efficiency sunk to 67.9%, but in comparison with the competition, that was not a bad result.
The standby consumption of 0.70 watts with no load is respectable, and even with load on the standby cable, the unit still does alright. A power consumption of 3.93 watts with a load of 2.5 watts is good when compared to the competition.
The Corsair HX520W can be purchased from retailers at a price of around $120. And because it comes from Corsair, local availability is plentiful.
The "veteran" amongst the power supplies can still keep up with the competition.
- High efficiency at full loadQuietGood modular cables
- Low efficiency under low loads