fan speed/noisy fans

T

tiger9988

New Member
I've got a home made rig here that is excessively noisy. The sound that the tower produces is so loud that if I want to read in the room I have to put ear plugs in. Oddly enough, the sound appears to be coming from a fan that was advertised as a specialty, near silent unit. I would like to slow down the fan to the point at which it becomes bearable, but I don't wish to put my system in jeopardy of over heating.

I checked out the bios and found these specs
42 Celsius- System Temp
43 Celsius- CPU Temp
Fan Speed- 4590 RPM
CPU fan speed- 0 RPM
Northbridge Fan- 8766 RPM

I suspect that the CPU fan sensor is either not working properly or is nonexistent, so I'm not too worried about that. The other two fan speeds seem excessively high though.

How should I go about quieting down my system without burning it up?

Thank you!
 
Replace the fan! Get rid of garbage for some effective and quieter cooling. It also will depend on what the "advertised specialty" is. Is that a cpu, case, supply fan? 43C isn't bad for an idle cpu temp but could be better. You may want to monitor temps while in Windows as well as fans speeds there. When you are in the bios there is nothing like the system idle process found in Windows running. Temps and fan speeds are unregulated to some degree.
 
Ok well I yanked what I believe to be the offending fan out. It is a cooler master 12V. I got SpeedFan and I am currently monitoring the temps, and it is resting at 42 with the fan out, just as it was with the fan in.

I also played a round of Company of Heroes, a rather taxing RTS game, and the temp never went above 45 Celsius.

Evidently this fan doesn't even have a speed/temp monitor on it, as SpeedFan is still registering "Fan 1: 4400 RPM" "Fan 2: 0 RPM" "Fan 3: 8654 RPM"

Curiously, while all the fans were spinning (I checked physically), the computer is still as loud as it was before, even with this fan out! That makes me think that it is actually the case fan, and not this additional fan that I added, which is making all the racket. Perhaps it is the 9000 RPM one? I'm not sure how I would tell. Anyhow would you suggest that I replace the case fan with this one that I removed, since the computer is no quieter than it was before?
 
Also, in the BIOS, something called Smart CPU Fan Target was disabled. Is this normal? I have the case open and laying on its side now, so I can see what is going on. The noisy fan is either the case fan, or my AMD 3200+ 64 bit processor fan.

As well, no matter what the computer is doing- resting at desktop, sleeping, playing games, the fans are equally loud.

And here is a pic of what SpeedFan is registering. Oddly, in total I have 4 fans currently running- case fan, motherboard fan, video card fan, and processor fan, and even when I had the Cooler Master fan in, both BIOS and SpeedFan only register 2 fans spinning.

fanwt3.jpg
[/IMG]
 
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SpeedFan isn't usually the greatest with the varying number of fans people run in their cases. It's used here mainly for a quick look at cpu and board temps with those compared to the ones seen with the Asus temp probe. Now that you pulled the cpu fan you can rule that out. The one other fan not mentioned at all here is the one or more in the power supply itself. You could try unplugging one case at a time and still find that being the noise maker.
 
No no no I didn't remove the CPU fan, I removed an extra fan (cooler master) that I installed later on in the side of the case. I figured that it was the offending piece, but it is not, as the computer is still loud as hell.

Can you suggest any other programs that might let me change the fan speed, or better yet, a way to get the fans to monitor and alter their own speeds based on necessity?

Also, wouldn't I risk frying stuff if I unplugged the fans, like the one on my CPU?
 
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OK guys well I took out the main fan, and it is not the offending one, neither is the power fan. it must be the CPU fan. Can I safely replace the CPU fan with my Cooler Master fan? Would it be better to just adjust the spin rate of the fan that is on there?
 
I got Motherboard Monitor 5, here are the results

untitledcj8.jpg


I think the oddest one is that the CPU is at -68 degrees Fahrenheit. That reading cannot be right. Is it possible that the sensor on the CPU is off and that is why the fan is wacky?

I'm really at a loss here. Please some one give me some direction before I end up destroying my PC by doing something stupid.
 
It isn't your CPU fan, so it must be your case fan, unless your CPU fan is going faster than around 3000 RPM.
 
I removed the case fan and put it to my ear. It is quite quiet. I also put my ear to the fan in the power supply, and it is not that. The only fan larger than a nickel left in the thing is the CPU fan.

Why do you say that it isn't the CPU fan?
 
The larger the fan, the quieter it is.

I say that because I have heard AMD fans, (Socket 939 and Socket AM2) and they aren't loud at normal speeds.
 
Well I got everest system monitor as well, and it confirms that it is the north bridge fan that is running at 9000 rpm. What in God's name is a north bridge?

untitledmd6.jpg
 
Aha! Well I found out that the north bridge fan is the one on the motherboard itself, and after running my ear around the inside of the computer, it does appear as if the sound is emanating from the MSI fan, even though it is tiny. I didn't even consider this initially, since the thing is the size of a quarter! Being that it is running at 9000 RPM, and being that my motherboard is at 40 Celsius, can I somehow slow down the fan in order to quiet it the hell down? I am so excited that I have almost found a solution!
 
Jet said:
The larger the fan, the quieter it is.

I say that because I have heard AMD fans, (Socket 939 and Socket AM2) and they aren't loud at normal speeds.
Click to expand...
It's quieter because it is bigger, and therefore can run slower while pushing more air. It's the rpms that makes noise.
 
tiger9988 said:
Aha! Well I found out that the north bridge fan is the one on the motherboard itself, and after running my ear around the inside of the computer, it does appear as if the sound is emanating from the MSI fan, even though it is tiny. I didn't even consider this initially, since the thing is the size of a quarter! Being that it is running at 9000 RPM, and being that my motherboard is at 40 Celsius, can I somehow slow down the fan in order to quiet it the hell down? I am so excited that I have almost found a solution!
Click to expand...

Get a different cooling solution for your Northbridge would be the best option.
 
Some guys on other forums were talking about either replacing the fan or getting a speed limiter. Is there no way to do this with software alone?

If a physical solution is my only choice, can anyone suggest a fan that would fit my k8n neo4 mobo, or a fan resistor to slow it down without harming it?

Edit:

There are a whole ton of people with the same problem evidently.

http://www.silentpcreview.com/forums/viewtopic.php?t=19902&start=0&postdays=0

http://www.google.com/search?hl=en&q=northbridge+fan+msi+k8n+neo4&btnG=Google+Search

Either way I would like to slow it down to a bearable level, say 5000 RPM, while waiting for a better fix. Is there any program or way to go about this?
 
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Just get dual ball bearing fans. They last longer, there quitter, they don't cost much, the can run at those speeds and seam so quite you wont notice AND are 80% quieter than a normal fan. That's an actual FACT I picked up on researching them. Now, doesn't that seem good for you? I am going to buy about 3-5 of them since they are so efficient.
 
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