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    Dual 12V PSU Shootout
    Author: JonnyGuru
    Date Posted:21/07/2005 13:42.03
    AMS Mercury PP-44603 SLRating: SLRating: 9/10
    Seasonic S-12-430 SLRating: SLRating: 9/10
    Thermaltake TWV500 SLRating: SLRating: 9/10
    Bottom Line: The three of these power supplies really don\'t shoot-out each other. If you want cheap, the AMS. If you want quiet, the Seasonic. If you want modular, the Thermaltake.

    Find the lowest price for this product - AMS Mercury PP-44603
    Find the lowest price for this product - Seasonic S-12-43
    Find the lowest price for this product - Thermaltake TWV500
    Pages: 1 2 3 4 5 6 7 8
    Discuss This Article


    Load test results

     
    AMS Mercury PP-4603
     
    Total Wattage
    12V1
    12V2
    5V
    PF
    Efficiency
    Test 1
    405W
    11.94
    11.92
    4.98
    .71
    74%
    Test 2
    450W
    11.86
    11.82
    5.00
    .72
    72%
    Test 3
    460W
    11.88
    11.88
    4.95
    .72
    71%
    Test 4
    460W
    11.92
    11.83
    4.95
    .72
    71%
    Test 5
    516.8W
    11.70
    11.68
    5.02
    .74
    68%
    5VSB Only Load
    .56
    46%

    For $60, this AMS is kicking ass and taking names.  The rails remained very consistant and I was able to put a load significantly greater than what the label showed.  Power factor and efficiency were average.

     
    Seasonic S-12
     
    Total Wattage
    12V1
    12V2
    5V
    PF
    Efficiency
    Test 1
    407W
    12.00
    11.94
    5.04
    .99
    76%
    Test 2
    453W
    11.94
    11.88
    5.04
    1.00
    75%
    Test 3
    N/A
    N/A
    N/A
    N/A
    N/A
    N/A
    Test 4
    463.4W
    11.98
    11.89
    5.03
    1.00
    74%
    14A/15A/14A/10A
    465W
    11.92
    11.85
    5.05
    1.00
    74%
    5VSB Only Load
    .91
    45%

    Surprisingly enough, the famed efficiency of the Seasonic, which no doubt is very efficient, is not even as good as the Enermax we reviewed last month.

    Test 3 was a no go with the Seasonic.  The load was too much for the 12V1 rail.  The power supply didn't shutdown like it did when I applied the default Test 5 settings, but the voltages were fluctuating so radically, it wouldn't be fair to even attempt to document.

    Certainly the Seasonic is a strong power supply.. for a 430W unit.  I can only imagine that the higher end models are just that much better.

     
    Thermaltake TWV500W
     
    Total Wattage
    12V1
    12V2
    5V
    PF
    Efficiency
    Test 1
    411W
    12.20
    12.13
    4.98
    .98
    72%
    Test 2
    459W
    12.18
    12.11
    4.96
    .98
    71%
    Test 3
    469W
    12.16
    12.13
    4.95
    .98
    71%
    Test 4
    469W
    12.20
    12.07
    4.95
    .98
    71%
    Test 5
    530W
    12.14
    12.06
    4.93
    .99
    69%
    18A/18A/10A/10A
    535W
    12.16
    12.06
    4.95
    .99
    69%
    5VSB Only Load
    .94
    25%

    The Thermaltake has decent power factor and average efficiency (almost below average,) but it can certainly produce it's advertised power and then some.  During Test 5, the power supply didn't even flinch for the full half an hour it was loaded up.  I decided to take things further and loaded both 12V rails up to 18A to produce a total wattage of 535W.  Although efficiency dipped below 70%, it still stayed cool and the rails hardly fluctuated at all.  WOW!



    So where does that put us? Go the the next page
    Article Options

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    Article Navigation

    1. Introduction
    2. Testing
    3. The AMS Mercury PP-44603
    4. The Seasonic S-12-430
    5. The Thermaltake TWV500
    6. A look at the cables
    7. Load test results
    8. Conclusion


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