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Good positioning of fans for airflow?


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#1 Rewster

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Posted 27 November 2012 - 07:48 PM

No clue where this would belong, so just posting it here on internal hardware. I'm just wondering what a good positioning of fans would be to have optimal airflow. I have the Corsair 400r which has mounts for 5 140mm fans and 3 120. 2 in the front(120), 2 on top(140), 2 on the side(140), and 1 on the bottom(140) and back(120).

I am going to be buying 5 more fans to take up remaining fan mounts. What would be a good configuration for optimal airflow?

I was thinking this:

Intake: Two in front, bottom
Outtake: Two on top, back

However, I don't know what the side fans should be. What would be best to have there, intake or outtake?

Edited by Rewster, 27 November 2012 - 07:53 PM.


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#2 the_patriot11

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Posted 27 November 2012 - 11:21 PM

I would say the side fan over the video cards definetly be an intake. If your using an aftermarket cooler, you may not have room for the fan over the CPU, but if your using the stock cooler, I would have it blowing in the same direction the stock cooler fan is blowing, in most cases it would be intake, as well. If you are using an aftermarket cooler, and you have room for a fan there, then experiment to see what gives you the coolest temperature. the front and bottom fans, should be intake, and the ones on top back should be exhaust. Thats how I would do it anyway.

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#3 Rewster

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Posted 28 November 2012 - 12:08 AM

I do have an aftermarket cooler, but i should have room for the fan over the cpu. I have the Cooler Master Hyper 212, it isn't too large. I have it blowing towards the outtake in the back. I have a MicroATX board, so the bottom fan doesn't have anything to blow onto.

#4 the_patriot11

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Posted 28 November 2012 - 12:12 AM

well, then in all actuality if its a micro-atx board the bottom fan would likely be a complete waste, but if you insist on having it, I would still leave it as intake-if you have a dedicated graphics card, the fan on the card (if equipped) will pull the air up into the card and out the back, depending on what cooling the card has. Im assuming your using a mid-to high end video card, if your using a low end video card on a micro-atx case, then all these fans are extreme overkill, and will just add to the dust buildup inside the tower.

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Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

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#5 Rewster

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Posted 28 November 2012 - 12:26 AM

I am using the EVGA GTX 670. By bottom fan, do you mean the lower one on the side or the bottom of the case?

Edited by Rewster, 28 November 2012 - 12:29 AM.


#6 the_patriot11

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Posted 28 November 2012 - 08:57 PM

lower one on the side, and since the 670 is a dual slot card, a side fan would be a very good idea. Dont know if you need two fans on the side though. I honestly recomend finding the least amount of fans possible to keep your system cool, and adding one more to be safe-keep in mind the more fans you put in, the noisier the machine will be, and the more you will have to clean it out because of how much dust it will collect.

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Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

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#7 Rewster

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Posted 29 November 2012 - 07:17 PM

Alright, I bought four fans. I don't mind the noise, I use a very good headset, it cancels out most noise. I have my GPU fan run at 80% when gaming and I barely even notice it.

What is a good way to clean out dust? Thus far I have just been wiping the thin layer off of the PSU and GPU with my fingers.

#8 the_patriot11

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Posted 29 November 2012 - 07:38 PM

I use compressed air, you can find it in the electronics department at wal-mart or most PC stores. Just follow the directions on the can, and remember when it says short bursts, its short bursts, 2-3 seconds holding the can upright.

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#9 killerx525

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Posted 30 November 2012 - 12:43 AM

You can also use a small brush to clean the dust off.

>Michael 
System1: CPU- Intel Core i7-5820K @ 4.4GHz, CPU Cooler- Noctua NH-D14, RAM- G.Skill Ripjaws 16GB Kit(4Gx4) DDR3 2133MHz, SSD/HDD- Samsung 850 EVO 250GB/Western Digital Caviar Black 1TB/Seagate Barracuada 3TB, GPU- 2x EVGA GTX980 Superclocked @1360/MHz1900MHz, Motherboard- Asus X99 Deluxe, Case- Custom Mac G5, PSU- EVGA P2-1000W, Soundcard- Realtek High Definition Audio, OS- Windows 10 Pro 64-Bit
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#10 the_patriot11

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Posted 30 November 2012 - 06:43 PM

You can also use a small brush to clean the dust off.


outside of the case only. If you use a brush on the inside, it could build up static electricity and fry components.

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Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

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#11 killerx525

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Posted 30 November 2012 - 10:25 PM

A anti-static brush ;)

>Michael 
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#12 the_patriot11

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Posted 01 December 2012 - 12:09 AM

they also dont get the dust out of the case, just pushes it around inside.

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Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

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#13 Jan Benedict

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Posted 01 December 2012 - 03:10 AM

you can also use a blower.. Then blow all dust out from cpu and parts.. :D




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