Computer Fan

anthony88guy

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Feb 3, 2005
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I have an old 750mhz Duron, and my fan on my CPU has always had a weird sound to it, but every now and then it gets really loud, and after a few minutes it calms down. Its really pissing me off, should get a new fan and just replace that on my heat sink?
 

YOyoYOhowsDAjello

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Aug 6, 2001
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Do you think it's getting louder because a temperature sensor is changing the speed, or is the fan just wearing out?

If you want to solve both those problems, you could get a nice quiet fan with pretty good air flow and then plug it into a regular 4 pin molex power connector so it would stay at constant speed. Depending on your heatsink size, maybe a panaflow fan and a 60mm to 80mm fan adapter?
 

anthony88guy

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Feb 3, 2005
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Well, the computer is getting old, and my guess the fan is just getting old. Are you suggesting just getting a fan, and plug it in the molex connector not the motherboard 3-4 pin? Its not getting louder because of rising temps. You can really hear that the fan is dying.
 

daniel49

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Jan 8, 2005
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I have pulled those fans apart before and put a little 3 in one oil on them and it has worked for me to quite them down.
 

YOyoYOhowsDAjello

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Originally posted by: anthony88guy
Well, the computer is getting old, and my guess the fan is just getting old. Are you suggesting just getting a fan, and plug it in the molex connector not the motherboard 3-4 pin? Its not getting louder because of rising temps. You can really hear that the fan is dying.

Yeah, you could plug it into the motherboard too though. I was just saying molex in case it was the motherboard changing the fan speed that was bothering you.

Is it a 60mm fan you have now?

If it's a 60mm fan now and you want an 80mm fan, you can get something like this and then connect a nice quiet 80mm fan to it.
 

anthony88guy

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Feb 3, 2005
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Yeh, it looks like a 60mm fan. Would the converter and 80mm fan opposed to the 60mm fan do a better job? I know the bigger the fan and less rpms can move the same amount of air as a smaller fan with higher rpms, at a lower noise level.
 

YOyoYOhowsDAjello

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Yeah, the lower noise level is what I was going for on that suggestion.

There's nothing wrong with just getting a new 60mm fan if the one you have is dying.

 

anthony88guy

Senior member
Feb 3, 2005
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Yeh, I understand what you were going for. So almost any 60mm fan would do with a 3-4 pin connection? How can i test the fan before I use it? Get a 4pin converter to a molex?
 

YOyoYOhowsDAjello

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Aug 6, 2001
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Your motherboard probably has more than one 3 pin fan header. Sometimes they're kinda randomly placed it seems.

If not, yeah, you can get an adapter for a 4 pin source (it might even come with one)

Or, you can just plug it in and use it right away. Keep your case open and if it doesn't spin up, just turn your computer off. You wont kill your processor in the time it will take to turn the computer on and off because the heatsink only really needs the fan to get fresh air to run past it to cool it down once it gets hot. It takes a while for the heatsink to get really hot, so a few seconds will be perfectly ok.

Just start it up and then if the fan isn't spinning, hold down the power button and it will shut your comptuer down in about 5 - 10 seconds.
 

YOyoYOhowsDAjello

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I've never picked out a 60mm fan before so I don't really know what a good ratio of airflow to loudness would be.

I'd hate to recommend something that wont give you enough airflow or would sound like a hairdrier.

Maybe if you do some searching around cases and cooling they'll have some recommendations for 60mm fans from someone else's questions.