Too much Dust building up inside cabinet coz of intake fans

salilskp · Nov 28, 2015

hello everyone
i have this cabient antec gx505 which is provided by 3 pre-installed 120mm exhaust fans on the top and back side of it. Additionally to balance the airflow I added 3 more 120 mm fans for intake on the front and the side panel of my cabinet.
Front panel has dust filters whereas side panel has none so too much dust starting to gather inside very quickly.
And the side panel fan is make a lot of noise although its spinning at a speed of 1300 rpm..So i need some suggestions to keep the dust out and decrease the fan noise please help me out.

Archaic59 · Nov 28, 2015

So you have 6 case fans, a PSU fan, a CPU fan and most likely a GPU fan (or two) for a total of around 9-10 fans. Basically you have a wind tunnel. Really, are they all necessary? An intake fan up front and one exhausting out the back is enough for most systems. Filling fan slots just because they're there is unnecessary. Try removing a bunch of them and monitor your temperatures to see how it's affected. Remove or add fans accordingly.

taopc · Nov 28, 2015

um put filters on the side fans? upgrade the fans to some quiet fans. i really like my fractal design venturi 120mm fans...its pretty quiet at 100% 1800rpm

salilskp · Nov 28, 2015

Archaic59 :

Ha ha yes U r right. I have 10 fans inside my cabinet... Thanks to that i am getting good temp readings on load..Before I had my cabinet and fans my gpu(msi gtx 760 twinfrozr oc ) load temp was 80 degrees above. I am from India.here ambient temp is above 35 deg but now its giving me 68 or 70 max. I had no other choice my room is very clumsy not much ventilation is there. secondly as i mentioned my case already came with 3 fans installed for exhaust so i have to add intakes for balance..

Archaic59 · Nov 28, 2015

You can add something like this-

http://www.newegg.com/global/in/Product/Product.aspx?Item=N82E16811999217
http://www.newegg.com/global/in/Product/Product.aspx?Item=N82E16811999249

salilskp · Nov 28, 2015

Archaic59 :

Yes I like those. they will keep the dust out. I'll buy one.

madmatt30 · Nov 28, 2015

3 intakes , 3 exhaust - absolute overkill.

You didn't need to buy anymore fans - what you should have done when you got the case is take the top front exhaust out & fit it as an extra fton intake .
You would have had 2 intakes /2 exhausts then which would be fairly optimal.

I'm not a believer in side fans , they're noisy , inefficient & drag dust & particles into the case like nobody's business.

salilskp · Dec 2, 2015

madmatt30 :

bro what u said is also true but nothing can be done now I already bought 3 cabinet fans and installed it no chance to return or sell them now what done is done we must focus on how to control the dust intake.. like Archaic59 mentioned filters before I like that idea but there is one small problem, the thing is one filter would cost me nearly 2k INR(indian rupees)coz I already searched all the online sellers and I don't want to buy one filter for 2k.. so any other options ??

http://www.amazon.in/gp/product/B00ARB5E8U/ref=pd_lpo_sbs_dp_ss_2?pf_rd_p=733112647&pf_rd_s=lpo-top-stripe&pf_rd_t=201&pf_rd_i=B011ECHGUE&pf_rd_m=A1VBAL9TL5WCBF&pf_rd_r=1AV5SSJ2W8PWVHSAWJJ3

here see the price

salilskp · Dec 2, 2015

just asking, Can I use socks as filters ?? LOL

jaguarskx · Dec 2, 2015

Yeah, the only way to reduce dust is to use some type of filters. Socks would be too thick. I would buy replacement filters for air conditions. Just cut them to fit and rinse them about every month or so depending on how much dust they trap. Use them only for the intake fans.

salilskp · Dec 2, 2015

jaguarskx :

yeah but replacement filters for Ac will be too much for my budget isn't it ?

Karadjgne · Dec 2, 2015

Turn the side fan around and slow it down a lot. Use it as exhaust @400-500rpm. Basically it'll be used as collateral exhaust for the gpu heat, without interfering with the gpus intake. This will negate much of the in-case temps when gaming. Leave your 2x intakes at higher rpm, 1000+. If your cpu cooler is a tower cooler, leave rear exhaust higher rpm, has a higher draw for cpu cooler exhaust heat. If you have the stock cpu cooler, drop the rear exhaust entirely, just use the 2x top exhaust. In area broadcast like a stock cooler, heat will naturally rise, top exhausts help with that, rear exhausts hinder, that heat isn't going to want to go sideways and that rear exhaust is fighting for air vrs the top exhaust closest to it.

Having many fans doesn't hurt, but you must pay closer attention to what the fans are doing and controlling speeds. Turning top exhaust speeds down a little will go a long way to quieting things down and balance out your system, without impacting the intake cfm.

I have a cm 690 II Adv case. 2x 140mm intakes, 2x 120mm exhaust, 1x 120mm rad. The rad and 120mm is mounted as top exhaust, and side exhaust. Intakes at 800 rpm, side exhaust at 400rpm, top is variable (cpu controlled). Under heavy gaming case temps only rise @2° over system idle and only fan that spins higher than the 800rpm intakes is the cpu rad fan which reaches 900 under load.

It's airflow that's important, the rate of exchange between intake and exhaust, not the amount of air dumped into a case.

salilskp · Dec 2, 2015

Karadjgne :

Turn the side fan around and slow it down a lot. Use it as exhaust @400-500rpm. Basically it'll be used as collateral exhaust for the gpu heat, without interfering with the gpus intake. This will negate much of the in-case temps when gaming. Leave your 2x intakes at higher rpm, 1000+. If your cpu cooler is a tower cooler, leave rear exhaust higher rpm, has a higher draw for cpu cooler exhaust heat. If you have the stock cpu cooler, drop the rear exhaust entirely, just use the 2x top exhaust. In area broadcast like a stock cooler, heat will naturally rise, top exhausts help with that, rear exhausts hinder, that heat isn't going to want to go sideways and that rear exhaust is fighting for air vrs the top exhaust closest to it.

Having many fans doesn't hurt, but you must pay closer attention to what the fans are doing and controlling speeds. Turning top exhaust speeds down a little will go a long way to quieting things down and balance out your system, without impacting the intake cfm

ok bro u definitely have a nice idea but its taking me time to understand so will u please wait for my reply ?

Karadjgne · Dec 2, 2015

Sure.

salilskp · Dec 2, 2015

ok so I used deepcool xfan120l/b(1300 rpm,58.3 cfm) as side intake and two Circle Stay Cool C-12 120mm( 2000RPM , 90cfm) as front intake. and 3 pre installed 120 mm case fans with fan controller switch(antec gx 505 case) both top and rear side for exhaust. and all of those are connected to my PSU antec vp550p so only I can control the exhaust fans but I don't have any controls over intakes. my cpu cooler is stock one. Its a decent 80 mm fan. so now my CPU and GPU's idle and load temps are 40 degs and 38 degs 68 degs 69 degs respectively. so now u get the clear picture from the data i give u. So now tell me what to do ?

jaguarskx · Dec 2, 2015

salilskp :

I don't recall paying too much for generic AC replacement filter sheets at my local hardware store a few years ago. $10 - $15 maybe? They come in a somewhat large sheet (there is no frame) so I simply trim them so they will fit the AC's grill.

Karadjgne · Dec 2, 2015

Ok. Since you have psu direct fans, you'd need to use adapters to bring the speeds down. These make 9v or 7v out of the 12v wire, which will drop speeds from 2000rpm (wow!) to somewhere around 1200-1400 rpm. For intakes that's fine. It would be better to connect to the motherboard directly, use a 2fan splitter and run both intakes off 1 system fan header.
The side fan I'd run to the exhaust fan header next to the cpu. This will give you control and enable you to cap the speed.
The other 2 top exhaust use a splitter to the header at the top of the motherboard near the cpu fan header or use the case switch. I personally prefer not to use the case switch as it's a manual control, whereas the motherboard is automatic.
Alot will depend on exactly what connectors you have on your fans. If you have the big molex connectors, you'll need to use the voltage adapters and the case switch etc. Hard to see exactly.

What the goal is is to make the fan on the side into a low rpm exhaust, basically just for the gpu heat, the top 2 exhaust slow down and the front intakes slower. Being controlled by the motherboard itself, either through the bios, through motherboard software or SpeedFan. Being controlled, at idle it'll not require great amounts of air being run through, temps won't get high enough to worry. At load, the fans spin up, move more air.

Karadjgne · Dec 2, 2015

Think of it this way. I'm sure by now, sometime, somewhere, you've poured a liquid into a funnel. If you poor too fast, the funnel fills up, poor too slow and you are wasting time. What you have done, adding all those fans is try and cut the hole in the funnel bigger, trying to match the flow. What I'm trying to get you to do is control the flow by balancing how much you pour in

salilskp · Dec 2, 2015

jaguarskx :

bro $15 is nearly a 1000 INR thats why I said anyway good suggestion.

salilskp · Dec 2, 2015

Karadjgne :

so basically u r saying that I need to slow down my fan speed to balance the air flowing inside and reduce the dust intake. So now all I have to do is re install the side intake fan as an exhaust and connect it to my mobo to exhaust gpu temp and keep dust to a minimum . 2nd lower my already pre installed exhaust case fans. ok i can do that but what u mentioned earlier about slow down my front fans I didn't get that too much technical for me sorry.

Karadjgne · Dec 2, 2015

Yes and no. The most important part of all this is airflow. Not intakes or exhaust. Throwing in a mass of air in several directions just circulates air around the case. Sure, some of the heat goes out, you have enough exhaust for that, but it would be better if it all went out. What you are looking for is a nice smooth flow of air, what comes in, gets used, goes out. No turbulence. That's the worst part about side intakes, they disrupt the flow of air, blowing a bunch of heat back into the gpu.

So, make the side intake into a side exhaust. No dust enters exhausts. By lowering the speed, you not only make the fan much quieter, but it'll only have the power to draw the air that's exhausted by the fans on the gpu. This helps keep a lot of heat away from rising and affecting the cpu.

Heat rises. What you want to do is help it out, as in help it get out of your case. You can't force it. So you have 2x lower intakes moving air in, the fans don't need to be running full speed all the time. You have 2x high exhaust, helping take that warmer air out. Air working in an almost straight line. With a rear exhaust, you are taking that nice flow and trying to pull it sideways. Rear exhausts only work well with tower coolers an cases with no fans in the top.

So,end result is a nice quiet pc with good temps and much less dust

salilskp · Dec 3, 2015

Karadjgne :

I get it what u want to say and i'll change side intake to an exhaust and experiment the airflow but I don't know how to disconnect rear end fan coz all 3 exhausts are connected and I don't have any control over my front intakes they will spin at 100% coz they are connected to my PSU..

Karadjgne · Dec 3, 2015

Fans are just plugged in. You can just pull the plug for rear exhaust. Do the front fans have a big plug or a little one. Is there adapters from the psu to make a big plug into a little one?

salilskp · Dec 3, 2015

Karadjgne :

are u talking about 4 pin molex connector and the 3 pin connector ?? if yes then yes there is one molex and one 3 pin for each fan. no there is no adapters sadly.. my psu antec vp550p v2 is non modular one so there are no adapters.

Karadjgne · Dec 3, 2015

You mistake me, the psu connectors are irrelevant. It's the actual connectors on the fans themselves. Fans generally come in 2 styles, 3 pin and 4 pin. These connectors are almost the same size, about 0.75cm wide. Very rarely you'll actually come across a fan with a molex connector. With a 3 or 4 pin fan to be directly connected to the psu, it needs adapters of some sort (3pin-sata or 4pin-molex etc). Those 3 or 4 pin fans are really designed to connect to the motherboard, not directly to the psu. There is at least 3 fan headers on any motherboard, 1 for cpu and 2x sys_fan, and more expensive motherboards can have 7 or 8 with 2x for cpu.

Too much Dust building up inside cabinet coz of intake fans

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