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How do I overvolt a molex fan?

post #1 of 23
Thread Starter 
Im sure this could apply to a CPU cooler, a case fan, or the video card fan, but anyway how do I make the fan spin faster if it uses the standard 4 pin molex cable?

Thank you
post #2 of 23
i honestly can't think of an easy way to do that. my specialty is houses, not low volt systems, so maybe someone else knows a way.

the problem is that those fans already run on 12 Volts, and the biggest rail on a computer power supply is the 12 Volt rail. so there doesn't appear to be any overvolting potential there unless you use a different power source. it's probably a lot easier to just buy a higher CFM fan.
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post #3 of 23
Thread Starter 
Specs

Fan Dimension ø 80x25mm
Rated Voltage 12 V
Fan Speed 1650RPM
Air Flow 9.26 CFM
Noise Level 16 dBA
Life Expectation 50,000 Hours
Connector 4-Pin
post #4 of 23
Thread Starter 
Hmm yeah well i was just wondering, maybe it isnt possible then
post #5 of 23
like i said, i don't see how it could be possible with a computer PSU. 9.26 CFM? lol, the good news is that it won't be hard finding a more powerful fan
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post #6 of 23
Only thing you could do is cut the wires and wire it directly to a molex. But your motherboard might not come on then thinking the fan aint connected.
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post #7 of 23
Thread Starter 
Quote:
Originally Posted by MrBungle View Post
like i said, i don't see how it could be possible with a computer PSU. 9.26 CFM? lol, the good news is that it won't be hard finding a more powerful fan
good luck. its in my thermaltake nd1 cooler, cant really replace it


Quote:
Originally Posted by Bal3Wolf View Post
Only thing you could do is cut the wires and wire it directly to a molex. But your motherboard might not come on then thinking the fan aint connected.
it already is connected to a molex. i have done this with my old geforce2 and it worked fine
post #8 of 23
You could try combining +12 and +5 i see some stuff on it but you probly would burn out the fan pretty fast. Probly very risky tho i wouldn't even try it.
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post #9 of 23
Thread Starter 
Quote:
Originally Posted by Bal3Wolf View Post
You could try combining +12 and +5 i see some stuff on it but you probly would burn out the fan pretty fast. Probly very risky tho i wouldn't even try it.
Life Expectation 50,000 Hours @ 12v

im sure it wouldnt lol

how do u suggest i combine the volts?
post #10 of 23
9.26CFM? Seriously? You can pick up some fans that are just as quiet and are 43CFM
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