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VGA fan
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VGA fan
PostPosted: 11/25/2005 3:59 AM Reply with quote
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From what you are describing, it sounds like the fan might not be solidly attached to your mobo.  I doubt that you will find any screws to tighten either.  I'm not sure how you could fix that unless you can wedge a small piece of plastic or rubber under the fan if there is a small gap...

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VGA fan
PostPosted: 11/29/2005 11:04 PM Reply with quote
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This is my mobo and the fan I'm talking about is the one smack dab in the middle with the 8X written on it.  After doing a little research I may just take it out, throw it away and call it done!






This is a perfect discription of my mobo fan!

Problems With Motherboard Northbridge Chipset Fans


These are excerpts from our forums on the problems that various motherboards are having with the fans used to cool Northbridge chips.  The primary conclusions are:

1) Manufacturer's are using cheap fans with sleeve bearings instead of ball bearings.

2) They probably are not required in the first place and a solution may be to simply unscrew the fan from the heatsink, leaving the heatsink in place, and then monitoring the temperature for some time by touching the chip.  Be careful!  some chips can get hot enough to burn skin.  If it stays rather warm to the touch, it is probably OK to run it without replacing the fan.  Larry
~~~~~~~~~~~~~~~~~~~~~
.........................  Well, the customer who bought the third computer we built with this motherboard a couple of months ago called and said his computer made a funny noise when he turned it on that morning and asked if I had any idea what was causing it. I said yes (sigh!) and he brought it in to my shop. Sure enough, the bearing of the fan on the Northbridge had failed. Well, I searched for a replacement and was about to pay $10.99 for a heatsink-fan with a ball bearing fan and over $10 to have it shipped in ASAP when I decided to pull the fan by unscrewing the four screws securing it to the heatsink and see how hot the heatsink really got without the fan. I was surprised to find that it was barely warm to the touch. I then exercised the system with a bunch of benchmarks and discovered that it hardly got any warmer at all. In fact, the air coming from the Thermaltake Volcano 5 CPU heatsink-fan right next to it was warmer. ...... MORE at the site.

My mobo is a GA-7N400 Pro2  and it has a nForce2 Ultra400 chipset


Brick wall
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Re: VGA fan
PostPosted: 11/29/2005 11:54 PM Reply with quote
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I replaced the Northbridge fan on my mobo some time ago with a good ball bearing fan, and have had no more problems with it. Probably it'd been just as good to remove the old fan and leave that chipset without a fan. From what I've read, some mobo manufacturers put a fan on the Northbridge and others don't. So it may be okay to remove the fan.
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VGA fan
PostPosted: 11/30/2005 1:11 AM Reply with quote
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At any rate, bigR, it seems for right now I would be better off with no fan than this noisy one, right?

"And before they do break they have a nasty habit of expelling bearing residue in the form of a fine black powder, which seems to have an affinity for motherboards and is probably not too good for them".

Lately I hardly ever cut my PC off because of the noise at start up.


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VGA fan
PostPosted: 11/30/2005 4:19 AM Reply with quote
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It sounds like you could get away without the fan completely.  Why don't you try the experiment mentioned at the top of this page and see how hot the chip gets.  If it stays only warm, then you probably don't need the fan at all...

munky2
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Re: VGA fan
PostPosted: 11/30/2005 5:09 PM Reply with quote
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As NR suggested too, you may be okay without the fan.

As for the black powder, nope, never got that. But my fan tended to stop when it wasn't running noisy, it never broke.
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