Part 1: Four Cheap 80 PLUS Bronze Power Supplies, Reviewed

Antec HCG-400: Measurements

Efficiency According to the 80 PLUS Spec

Efficiency by Load

Antec's HCG-400 confirms our positive first impression with solid benchmark results. It easily beats the requirements of the 80 PLUS Bronze spec, especially at 20% and 100% load. At medium power draw, it’s spot-on. Even at low loads, the PSU can maintain good efficiency numbers. For instance, at a 50 W load, it offers 79% efficiency. Of course, as expected, efficiency falls off at lower loads. In this case, it's 70 percent at 25 W, though that's the best outcome from any other power supply in our round-up.

We confirmed that the HCG-400's inrush current and hold-up time are within the expected range. Actually, its hold-up time is the longest (and thus, best) of all test candidates. The HCG-400’s stand-by power draw is quite low. Moreover, its ripple voltage and noise are the lowest among all test candidates. The 12 V rail has just 30 mV of ripple on it. That's only one-quarter of the maximum allowed value, 120 mV.

This Antec PSU is fairly quiet, too. At 40 W power draw, it's barely audible at 30.9 dB(A). At 200 W, this value increases by just one decibel.

A Close Look at the PCB

The Antec PSU’s FR3 PCB is manufactured by Seasonic. Its solder quality is decent, but there is room for improvement. We like that Antec doesn't try to save a few pennies by foregoing shrink tube insulation where the wiring is soldered onto the PCB. Putting the input filter on a separate PCB like Antec does seems the safest option. The input filter consists of four Y capacitors, one X capacitor, and one ferrite coil, which means that no corners are cut and nothing is left out. All capacitors are made in Japan, the primary one by Hitachi and the others by Nippon Chemi-Con.

  • wolley74
    no love for the EVGA 500B?
    Reply
  • computer_nugget2
    ALWAYS judge a power supply by its weight. especially if its Chinese.
    Reply
  • InvalidError
    11435905 said:
    always judge a power supply by its weight.
    Some Chinese OEMs put rocks, small concrete blocks, lumps of steel or other stuff like that disguised as a transformer with bits of wire that aren't connected to anything to trick people into believing their heavier PSUs are better.

    So weight alone is not a reliable indicator.

    Also, at high frequencies and high efficiencies, the size of inductors, capacitors, transformers and heatsinks along with the associated weight shrink. While light weight and high quality may rarely be seen together, they certainly are not mutually exclusive.
    Reply
  • dudewitbow
    11435841 said:
    no love for the EVGA 500B?

    a good chunk of Tom's physical hardware reviews generally are conducted in europe. This goes for a good handful of the gpu tests as well. EVGA rarely ever shows up on review sites because of it(and possibly due to lack of EVGA response to a hardware review pitch)

    Reply
  • computer_nugget2
    11435944 said:
    11435905 said:
    always judge a power supply by its weight.
    Some Chinese OEMs put rocks, small concrete blocks, lumps of steel or other stuff like that disguised as a transformer with bits of wire that aren't connected to anything to trick people into believing their heavier PSUs are better.

    So weight alone is not a reliable indicator.

    Also, at high frequencies and high efficiencies, the size of inductors, capacitors, transformers and heatsinks along with the associated weight shrink. While light weight and high quality may rarely be seen together, they certainly are not mutually exclusive.

    do you have pics to prove this?
    Reply
  • envy14tpe
    This is PART 1. Which means more PSUs to come, so let's hope for no dumb comments asking why not this PSU or this one...
    Reply
  • jimmysmitty
    11436142 said:
    This is PART 1. Which means more PSUs to come, so let's hope for no dumb comments asking why not this PSU or this one...

    They have already listed the PSUs for part 2 and I didn't see a part 3 listed. I wonder where the Corsair CX430 is. Its a 85+ Bronze PSU and is $39.99 on Egg right now. Its one of the best entry level PSUs I have actually used as well and compared to other PSUs at the same price point or higher (within 550W and may or may not be 80+ at all) I have seen less of them come back bad.
    Reply
  • razor512
    11435905 said:
    always judge a power supply by its weight.

    While weight is an important factor, overall weight is 100% useless

    for example check out the SIGMA SHARK SP-635

    http://www.ocia.net/reviews/sigma635/page2.shtml

    it is probably one of the heaviest power supplies you will find (with the exception of some of the 1200 watt ones)

    I purchased it a while back and was disappointed at the internals. they used an insanely thick case that made the power supply weigh a lot but the insides were were the result of the owner of the company asking while walking around china, what are the cheapest items we can find on the shenzhen market today.

    (at least the power supply can double as a flail or a boat anchor)
    Reply
  • pyro226
    Hoping to see the CX430 and other corsairs reviewed. I like the little thing since it powers my PC. :D It originally rang a bit when the computer was suspended or at random after a few hours of use, but that went away with age.
    Reply
  • sanilmahambre
    Nice basic testing method
    Reply