Power Supply Roundup: Part II

Efficiency

The efficiency of the power supply is very good with a partial load. It achieves a level of 88% at 50% load and almost 86% at 20% load. The power supply also does well in the 35 watt test, where it still reaches 74.4%. Under full load, the power supply reaches 85.6% which is still a good level of efficiency.

The power supply doesn’t achieve particularly special results in standby mode. A power consumption of 4.41 watts results in a level of efficiency of just 56.6%. Without load, consumption is pretty low at 0.61 watts.

Incidentally, the difference in energy consumption with the fan on or off is just 0.5 watts.

Fortron FSP Everest 80Plus 600W

Fortron/FSP’s power supply with partially passive operation was a good idea. The implementation is not successful, though, as the power supply is louder than a traditional unit.

• Positive
• Negative

• Silent at very low loadsHigh efficiency
• Passive operation is not possible at 20% loadPower supply is much too loud when switching the fan on