+5V and +3.3V Rail Tests

Though not as heavily used as the +12V rail, the +5V and +3.3V rails are still crucial for the operation of USB devices and RAM modules, for example. As before, we're only including the 200W, 400W and 700W results in the charts below for ease of comparison. These loads can be considered light, typical and heavy workloads, with the 700W test being the one most likely to highlight instability. Any output that falls outside of Intel's specifications is considered a fail and highlighted in red.

+5V Rail Output

ATX spec limit: 4.75V - 5.25V

  • Be Quiet! Dark Power Pro 10 750W
  • Cooler Master Silent Pro M2 720W
  • Enermax Platimax 750W
  • Fractal Design Integra R2 750W
  • FSP Aurum CM 750W
  • PC Power & Cooling Silencer MK III 750W
  • Seasonic X-Series 750W
  • XFX Pro Series Black Edition 750W
    • 4.96
    • 4.94
    • 4.91
    • 5.04
    • 4.99
    • 4.91
    • 5.00
    • 4.97
    • 4.94
    • 4.94
    • 4.94
    • 4.94
    • 4.98
    • 4.99
    • 5.03
    • 5.11
    • 5.07
    • 5.01
    • 5.00
    • 4.99
    • 4.96
    • 4.98
    • 4.96
    • 4.94
0
1
2
3
4
5
Volts (blue = pass; red = fail)
  • 200W load test
  • 400W load test
  • 700W load test

+3.3V Rail Output

ATX spec limit: 3.14V - 3.47V

  • Be Quiet! Dark Power Pro 10 750W
  • Cooler Master Silent Pro M2 720W
  • Enermax Platimax 750W
  • Fractal Design Integra R2 750W
  • FSP Aurum CM 750W
  • PC Power & Cooling Silencer MK III 750W
  • Seasonic X-Series 750W
  • XFX Pro Series Black Edition 750W
    • 3.31
    • 3.30
    • 3.27
    • 3.31
    • 3.29
    • 3.26
    • 3.27
    • 3.26
    • 3.23
    • 3.29
    • 3.27
    • 3.23
    • 3.27
    • 3.25
    • 3.23
    • 3.32
    • 3.30
    • 3.25
    • 3.32
    • 3.31
    • 3.30
    • 3.30
    • 3.29
    • 3.28
0
0.5
1
1.5
2
2.5
3
3.5
Volts (blue = pass; red = fail)
  • 200W load test
  • 400W load test
  • 700W load test

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