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Is a single 1.3A 12cm fan on 7v trick safe?

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  • Power Supplies
  • Fan
  • Components
Last response: in Components
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September 1, 2012 5:17:11 PM

I have a 1.3amp 12cm fan I got from a Antec ATX case that can move lots of air but at full power (12v line) its really loud. Because I can't figure out how to rewire it for PWM control I have to run it on 7 volts using the 12v+/5v- > 7v trick. There's 2 other fans running on 12v and the 1.3amp fan is the only one on 7v. I'm just wondering if this is safe since I dont have the money for a new PSU.

More about : single 12cm fan trick safe

a c 144 ) Power supply
September 1, 2012 5:38:48 PM

Yes it is safe, one of the few areas in a computer where I will say an adapter is a good option. Many fans come with those adapters for just that "step down" purpose.
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September 1, 2012 5:46:38 PM

I just got a old terminating IDE connector and switched the negative pin to the 5v line and then wired the wires to the power wires of the fan
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a c 144 ) Power supply
September 1, 2012 6:03:10 PM

If your PSU doesn't kick and scream - it may depending on build design and quality, I think you're good.
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September 2, 2012 3:14:45 AM

Ok then, though I will say that I did go a little cheap on the PSU when computer before was crashing after I got a new video card. I got a 550w Cooler Master PSU
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