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    Dual 12V Rail PSU Shootout
    Author: JonnyGuru
    Date Posted:31/05/2005 15:13.08
    Enermax SLRating: SLRating: 9/10
    Neopower SLRating: SLRating: 9.5/10
    Silverstone SLRating: SLRating: 8/10
    Bottom Line: Grading of the Enermax, Antec and Silverstone Power Supplies was tough, but with stable rails and quiet operation, both the Enermax and Antec are going to come out on top.

    Find the lowest price for this product (Enermax)
    Find the lowest price for this product (Neopower)
    Find the lowest price for this product (Silverstone)
    Pages: 1 2 3 4 5 6 7 8
    Discuss This Article


    Load test results:
     
    Enermax EG495P-VE
     
    Total Wattage
    12V1
    12V2
    5V
    PF
    Efficiency
    Test 1
    367W
    12.16
    12.07
    5.06
    .69
    80%
    Test 2
    462W
    12.08
    11.96
    5.06
    .70
    78%
    Test 3
    438W
    11.97
    11.93
    5.07
    .70
    78%
    Test 4
    437W
    12.10
    11.95
    5.06
    .70
    78%
    Test 5
    508W
    12.02
    11.90
    5.06
    .70
    76%
    5VSB Only Load
    .56
    46%

    Stable rails and awesome efficiency really made the Enermax shine. 

     
    Antec NeoPower 480W
     
    Total Wattage
    12V1
    12V2
    5V
    PF
    Efficiency
    Test 1
    366W
    12.1
    12.05
    5.06
    .99
    74%
    Test 2
    463W
    12.1
    12.01
    5.05
    .99
    73%
    Test 3
    438W
    12.08
    12.07
    5.04
    .99
    73%
    Test 4
    436W
    12.09
    11.94
    5.04
    .99
    73%
    Test 5
    508W
    12.06
    11.97
    5.03
    .91
    72%
    5VSB Only Load
    .95
    21%

    The Antec NeoPower exhibited the most fluctuation on the 5V rail, but the least fluctuation on the 12V rail. Throughout all tests, the 12V rail never fluctuated more than .04V.  It also had Power Factor Correction that held up even during the +5VSB test.

     
    Silverstone Zeus ST52F
     
    Total Wattage
    12V1
    12V2
    5V
    PF
    Efficiency
    Test 1
    365W
    11.97
    11.93
    5.07
    .99
    75%
    Test 2
    455W
    11.74
    11.72
    5.09
    .99
    73%
    Test 3
    430W
    11.76
    11.76
    5.10
    .99
    73%
    Test 4
    430W
    11.79
    11.71
    5.10
    .99
    73%
    Test 5
    498W
    11.6
    11.57
    5.10
    .99
    71%
    5VSB Only Load
    .84
    44%

    Even though it's rated at 520W, the Silverstone had the lowest rated 12V rails (all of it's rated power is on the 5V rail.)  The 12V rail moved around quite a bit.  Furthermore, the 12V rail actually bounced around while it was under a steady load.  It was actually difficult to get a reading because voltage would bounce by about .2V every other second.

    So where does that put us?



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    Article Navigation

    1. Test Methodology
    2. Introduction
    3. Enermax EG495P-VE
    4. Antec NeoPower 480W
    5. The Silverstone Zeus ST52F
    6. A Look At The Cables
    7. Load Test Results
    8. Conclusions

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