Fortron 400W Blue Storm - Page 3

Written by John Chen    Tuesday, 12 October 2004 11:00
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Although the Blue Storm lacked quality insides, the rated amps per rail don't look all that bad.  Intel's ATX v2.0 requirement calls for a 24pin ATX connector in addition to dual independent 12v lines.  One 12v line feeds power to the CPU to keep the system running stably.  This means that stability won't be affected much when there are multiple hard drives and power hungry video cards running. 

The two 12v rails come with 14A and 15A, respectively.  While this is a bit low relative to other power supplies, it is suitable for a typical system and even under overclocked conditions.  However, extreme overclocking conditions might require higher amps to maintain system stability.  Notice that the Blue Storm does not have a -5v rail.  This means that you won't be able to use motherboard diagnostic LEDs or the OCZ DDR Booster.

The Blue Storm offers a low level of protection features:

  • OVP (over voltage protection) - 3.3v: 4.6v (maximum);  5v: 6.5v (maximum);  12v1 and 12v2: 15.5v (maximum)
  • OCP (over current protection) - 3.3v: 70 maximum;  5v: 48 maximum;  12v1 and 12v2: 20 maximum
  • SCP (short circuit protection) - the power supply will shut down when short circuit occurs

The Blue Storm meets these safety requirements:

  • IEC 60950
  • TUV EN60950
  • UL 60950
  • Nemko + CB Report

As mentioned earlier, the power supply is rated to have a 70% efficiency.  The power supply is rated to produce 400W of power at an ambient temperature of 25°C.  There is no way a typical computer setup will create an ambient temperature of 25°C.  This means that the output of the power supply is lower than the rated 400W under typical conditions of 30°C-35°C.