Very Loud Fans

MR_MU53NDO

MR_MU53NDO

MR_MU53NDO

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Joined
20 Aug 2012
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269
Location
Greater London
Right, so i'm a bit of an amateur at building PCs, and this is my first one. The problem is that i have is that i have 7 fans (including psu and gpu fans) and they're REALLY loud. it actually sounds like there's a big fan that you find in a car engine in the case, and it's kinda starting to get on my nerves.

The cpu and chassis fans are all running at around 2000rpm (give or take), which probably doesn't help, but at least its cool :)

My question is, is there any way that with very little money, i can make those fans quieter, without compromising the temperature (thermal matting could increase cpu and mobo temps?). the case came with rubber grommets for the fan screws, but i'm not sure whether they will help or not...
 
Use a fan controller or you could use molex 12v to 7v reducer cables. Slower fan speeds could mean a rise temps. Is it loud all the time or just when you are playing games? The graphics card is probably the main culprit for noise.

You could reduce the amount of chassis fans. I assume you have four of them? Where are they possitioned?
 
ok, well they're loud all the time, no matter what is happening. i don't know if i can control them, as one of them has a three pin connector in a 4 pin socket, and the other three are plugged straight into the psu (they came with the case). as for positioning, there is one 120mm one at the front, 2 120mm ones at the back and a 200mm on the top. cpu fan is also 120mm. to be honest, the graphics card is probably the quietest. i can only notice it if it goes above 75%. I have a reducer cable for the cpu fan, but i wanted to keep the cpu as cool as possible
 
a pretty cheap one. because i had Core 2 quad (yes, very old,but i had no money left) i got an Asus P5G41T-M LX. pretty cheap but it does the job. has fan control, but not very easy to use...
 
The ones plugged straight into the PSU will be running full speed all the time as there is no kind of monitoring to tell them what to do. The 3 pin into 4 pin socket will also run full whack as the forth pin is for monitoring. The CPU fan cooler should be using the 4 pin header. The Chassis fans you can plug into something like this https://www.overclockers.co.uk/showproduct.php?prodid=CM-105-BX
 
Sounds like your CPU cooler is the problem. The forth pin is fan control. When you first boot up it will normally run full speed then drop back down until you use a CPU intensive activity. In your case it will just run full speed all the time.
 
yep. i highly doubt that someone has invented some cable to convert 3pin into 4pin, as the fan probably can't be controlled in the first place. however, asus says that there's something called q fan on my mobo. i think i can change cpu fan speed on BIOS. i don't know whether it's worth changing it there, but at the moment, while i'm only using the internet, cpu is at 33 degrees. seems ok, but if i turn the fan down, i don't want it getting much hotter
 
on second thoughts, i can see from Asus PC Probe II that fan speeds on chassis and cpu do change regularly. it's not much (about 150-200rpm above and below 2000rpm) so i don't know if that's what they call control.
 
oh, sorry! my mistake. just checked and it turns out i have 4 pin cpu connector. ive done a really primitive test (i opened the pc and put my ear next to each fan) and i think that the fans connected my molex are actually really quiet. the one causing the headache is the front chassis fan, which unfortunately is a 3 pin connector plugged into a 3 pin socket, so it can't be controlled :( it's running at about 2300rpm constantly, and it's not exactly the quietest fan...

Also, would this work for cpu fan? http://www.overclockers.co.uk/showproduct.php?prodid=CB-007-GE
 
That would just connect it directly to your PSU and run it at constant full speed. I think.

If it's just the front fan bothering you, easiest thing to do is buy a slower fan :) 800-1200rpm should do just fine.
 
Slower fan. Resistor. Fan controller. Zalman fanmate. Loads of options.

If you want to control it via the CPU fan PWM signal then come visit my converter thread as linked by UnclePetey. My circuit takes the control signal from the 4 pin CPU socket and converts it into straight DC voltage to drive anything between 1 and 5 fans from 3v up to 12v. It's really quite nice and is efficient.

I've built around 5 for folk around the forum and use one myself.
 
Ahhhh....bliss :) i found an old resistor cable from my old machine, plugged it into the chassis fan and voila! it works at a reduced speed, and it's SO much quieter! I don't know how fast it's going, because the resistor somehow disabled the speed reading, but i don't particularly care :)
 
Tealc said:
Slower fan. Resistor. Fan controller. Zalman fanmate. Loads of options.

If you want to control it via the CPU fan PWM signal then come visit my converter thread as linked by UnclePetey. My circuit takes the control signal from the 4 pin CPU socket and converts it into straight DC voltage to drive anything between 1 and 5 fans from 3v up to 12v. It's really quite nice and is efficient.

I've built around 5 for folk around the forum and use one myself.
Click to expand...

I have one such converter and it works brilliantly.
 
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