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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
  • slomo4sho
    Nice review, I was hoping to see the Antec NeoPower series as well :(
    Reply
  • bf2gameplaya
    I use the Enermax Modu82+ 625W version (same design) and I can attest the 12v rails are rock solid, they just don't sag or dip under any load.

    The fan is interesting, I am used to the variable control knob but I do not miss it as the fan is silent under all but the heaviest sustained load and then it is audible, but not loud. It is a 120MM fan (quieter) but it is clear (louder). The fans' RPM monitoring lead is a must for my system board monitoring program as I could adjust other fans and settings based on the PSU fan RPM if I wanted, but as I run a near silent system, I have no need.

    I wish it was $50 cheaper, but you get your money's worth, no mistaking that.

    Reply
  • will the hx520 can hold uo with a 4870X2 or 280GTX with a high end overclocked pc?
    Reply
  • mafj
    Hi,
    I sill miss some bits.
    I would like to see how overcurrent and overheat protection works, whether mains spikes can damage the power supply.
    Whether joining +5V with +12V rail (as may happen when e.g. CDROM fails) will burn the other components.
    And noise/heat level.
    Reply
  • bobbknight
    Yep just about as informative as the first part, IE. not very.
    Unless you put the thing under load and oscilloscope the outputs for ripple and open it up to see the type of parts used and the construction quality. reviews of this type are next to meaningless.
    Reply
  • Pei-chen
    Love my 22 month old Antec NeoPower HE 550.
    Reply
  • jeffunit
    "But there is no 82Plus standard."

    Clearly these folks don't know about the different colors of the 80+
    program. The enermax is rated at the bronze level which must be 82% efficient. There is also the silver and gold level rating.

    google is your friend.
    Reply
  • jeffunit
    "For what it’s worth, that’s good enough to qualify the supply for the 80Plus Bronze certification, if Enermax pursued it."

    Not only did enermax pursue it, but if you go to 80plus.org, you will
    see that they are already certified at the bronze level. (80plus.org is
    down right now, or I would provide a url showing it.)
    Reply
  • jeffunit
    If you go to enermax's site, http://www.enermaxusa.com/catalog/index.php?cPath=21_56
    they have a big honking picture of the 80+ bronze certificate and the 6 power supplies it applies to. I fear tomshardware has not done their homework.

    Other than owning a 5 year old Enermax, I have nothing to do with the
    company. I have 5 antec earthwatts powersupplies, and a seasonic power supply in my 80+ collection.
    Reply
  • jeffunit
    Listing "Confusing “82+” specification in the product name" as a negative, clearly shows where the confusion lies, and it isn't with enermax.

    The 80+ standard is several years old. The newer colored standards of bronze, silver, and gold are newer, but that is the wonder of technology.
    For a technology web site, keeping up with newer things such as standards is necessary.
    Reply