CPU fan whining / screeching

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Noobpc

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Feb 17, 2013
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I'm not sure if there is a cable on top of the fan blades that is constantly getting hit, but my cpu fan gets a really loud whirring/whining/screeching noise under gaming pressure.

It is normally quiet at startup, but when I open minecraft, all heck breaks loose!

My cpu fan is OEM. I have an AMD A10 cpu.

Any help on this please?
 
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Calculatron

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Apr 3, 2013
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By all means, make sure that the fan is clear of any and all obstruction.

The stock heatsink and fan combination for the A10 isn't exactly the best, in terms of acoustics either. I think it's a 70mm fan that will scream up to 6000 RPM to keep that CPU cool. It's pretty much the reason I invested in an aftermarket cooling solution.
 
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jonsmith9847

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Try and turn the RPM down in your bios or motherboard settings or get a inline RPM resistor (like this http://dx.com/p/universal-4pin-cpu-speed-reducer-pvc-cable-for-electric-fan-multicolored-217570?tc=GBP&gclid=CJuO_JG8o7oCFVMdtAodJGsANg) or if I had your computer I would get a whole new cooler to deal with the noise (Stock = Noise, Overheating and low reliability)

Hope this helps and feel free to ask me more questions!
 
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Noobpc

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Pardon my ignorance, but i know next to nothing about cooling. This is my first build too.

Are there any fans that you guys can recommend? I will try to turn down the rpm first to see if i can fix anything.
 
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Calculatron

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If you plan on slowing down the RPM of your fan, I would go through the trouble of finding some good temperature monitoring programs first. (It can be tricky with an APU)

Try Coretemp and AMD Overdrive first. One of the other usually is pretty good about finding the actual CPU Core sensor; not others will sniff out the CPU Socket sensor first. HWMonitor is another good one, because it will try to display both sets (CPU Core and CPU socket) temperatures, but often gets "fooled" by APUs. (Ah! The wonderful life of dealing with computers!)

When you're confident you've found a good, accurate, dependable program, go ahead and diddle with fan speeds.

For aftermarket solutions... It depends on what you're willing to spend, what case/RAM you have, and if you ever plan on overclocking. On this site, the Cooler Master Hyper 212 EVO (roughly $35 bucks) is often the go to recommended buy for budget heatsink-and-fan combinations. The cheaper Xigmatek Gaia might be just as good for you.
 
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Noobpc

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I slowed down my fan's speed by 50% and the noise was immediately eliminated. However the case got pretty warm after a good 2 hours of playing games. I got a little freaked out because i have never felt a case that warm before.

I set The bios setting to allow the APU to get to 70% warm. I think i might need to lower that number.

On a quick note, how will i know whether or not my APU is overheating without causing permanent damage to my rig?
 
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Calculatron

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70%? Or 70 degrees C?

Depending on the type of A10 you have, your max core temperature is either 71C or 74C. So you're definitely cutting it close.

EDIT: http://products.amd.com/pages/DesktopAPUDetail.aspx?id=44&f1=&f2=&f3=&f4=&f5=&f6=&
 
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Noobpc

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Feb 17, 2013
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Sorry for the late reply.

I originally set the fan target temp to 70 degrees f. Realizing my mistake, I changed it to 55 degrees.

The fan is quiet until I start running minecraft for awhile, then it will increase in RPM to a high whir. I tried opening the case and the fan ended up slowing down and being quiet. I don't think my mobo supports the option to set the rpm speed, only target temp.

The case also became warm during the gaming session.

I am beginning to think my case is the reason my fan always runs loud.

Idk if it is my CPU or psu fan though.

Any thoughts?
 
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Calculatron

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I can't imagine your PSU would be stressed enough from an A10 to warrant it cranking up its fan. Even then, most PSUs have at least an 120mm fan, which will make more of a "whoosh" than a whir/whine. What brand/make is your PSU, and what size fan does it have?

What case do you have, and what kind of ventilation does it have? (How big of fans, and where.) A case without sufficient airflow can add ~15C to the CPU temperatures.



 
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Noobpc

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My build is just reusing an old dell dimension 2400 case.

The psu i have installed is this:
http://www.911forpcs.com/dedi24posufr.html

I dont think it is a 120mm fan because i have a 120mm mesh filter that wont fit on the side of the psu exhaust. Im thinking the psu fan size is 80mm? I might be wrong.

The only fans in my dimension case are the psu fan and the cpu fan. Nothing else. At the moment, the only ventilation i am doing is removing the side panel.

 
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Calculatron

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Yeah, I think you're right. That is probably an 80mm fan, which operates on a higher level of RPM, so it will be RPM. So, uh. That's fun. Depends on the fan, the max RPM could be anywhere from 2000-3000.

Most cases these days use have a minimum of two fans, one 120mm in the lower front, and one 120mm in the top rear. Usually that is enough to do the trick. It might be worth it to invest in a new case (and a new PSU), although in the meantime you can just leave the side off your current one.
 
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Noobpc

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Ok, so essentially what you are saying is that my case is the problem with my APU going high in heat.

Do you have any suggestions as to what cases/power supply i should be looking at?

Using my MSI FM2 board, i recall that it is a micro ATX style. I would like to go as cheap as possible. (under 30?)
 
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Noobpc

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Thanks a lot.

I'm not sure on buyig anything just yet though. Other than attracting dust, is there any other compelling reason that I should not just leave my case open?
 
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