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too many intake fans?

Sprett6

I'm buying parts to upgrade my current rig. i have planned to have two 780ti's in sli in a corsair 780t case with two 140mm fans front intake, one 120mm fan in the bottom of the case and a 140mm in the back also as intake, and as exhaust two   noctua nf-f12's pulling air through a corsair H105 in the top. 

 

Is this overkill when it comes to intake fans? just thinking that it would be nice with the extra air because of the two 780ti's.....

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Why not also exhaust at the back, I think this wil be better for airflow.

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I'm buying parts to upgrade my current rig. i have planned to have two 780ti's in sli in a corsair 780t case with two 140mm fans front intake, one 120mm fan in the bottom of the case and a 140mm in the back also as intake, and as exhaust two   noctua nf-f12's pulling air through a corsair H105 in the top. 

 

Is this overkill when it comes to intake fans? just thinking that it would be nice with the extra air because of the two 780ti's.....

nope that should be great

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Depends on if you want positive or negative pressure... 

I have a single 780ti and a h100i, i have 4 intake 120mm and 2 exhaust via rad 120mm 

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as long as they are all filtered it should be fine.

Really no need for the rear fan to be intake though.  If you have it exhaust you will still have positive pressure.

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Maybe switch the back 140 to be blowing out, but other than that, it's great, It's better to have positive pressure anyways :)

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You can potentially cause hot spots in your case with too many intake fans because the air cannot escape fast enough.

 

IMO, the bottom mounted fans are not very helpful.

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As you have a rad on top exhausting, that fresh air rear intake is helpful to cool down the CPU.

You have enough air going to the GPU and motherboard area, so your video cards should be fine.

 

If I were you, I would check the GPU temperatures with the bottom intake fan turned on and off - it might be disturbing the airflow to the GPU area.

 

Good luck.

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positive air pressure is generally better, however, if it is too positive, it could cause problems with the air not being able to get out fast enough causing noise. I would say flip the rear 140 around so it goes out the back. you will still have positive air pressure, but it will be a bit more balanced.

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You can potentially cause hot spots in your case with too many intake fans because the air cannot escape fast enough.

 

IMO, the bottom mounted fans are not very helpful.

yes, i'm thinking that the 140 in the back will supply the radiator with fresh air (spinning at low rpm) and that the radiator fans will spin at 1000rpm+ when the PC is under heavy load

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As you have a rad on top exhausting, that fresh air rear intake is helpful to cool down the CPU.

You have enough air going to the GPU and motherboard area, so your video cards should be fine.

 

If I were you, I would check the GPU temperatures with the bottom intake fan turned on and off - it might be disturbing the airflow to the GPU area.

 

Good luck.

ohh you have really good point about the bottom fan, thanks for the tip!

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also, as BaSkA said, the bottom fan might actually disrupt the flow of air that would otherwise go straight towards the gpus. also, is it filtered? if not, then definitely flip it around. it will just suck up all the dust from the floor.

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also, as BaSkA said, the bottom fan might actually disrupt the flow of air that would otherwise go straight towards the gpus. also, is it filtered? if not, then definitely flip it around. it will just suck up all the dust from the floor.

yes if i decide to have one in the bottom it will be filtered. I'm kinda on the fence about it though, was only going to have the three 140mm as intake, untill i had an idea to use one of the 120's i have lying around as an extra intake...

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it would probably be better to remove it altogether. or if you want to be super ghetto, you could attach it to your rad as a half push/pull setup lol. with two fans pulling and one pushing.

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yes, i'm thinking that the 140 in the back will supply the radiator with fresh air (spinning at low rpm) and that the radiator fans will spin at 1000rpm+ when the PC is under heavy load

Another thing to keep in mind is the rear fan is not filtered, so it will be sucking in all the dust as well.

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Another thing to keep in mind is the rear fan is not filtered, so it will be sucking in all the dust as well.

140mm fan filter is on the list aswell ;)

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Most everything has been said.  Flip your exhaust on the back of the case so it's being used to exhaust rather than intake. 
I'd remove the top fan nearest the front of the case, and then call it a day.

The bottom fan isn't doing much of anything, but it may help guide the air up quicker and more easily. 

 

Edit: Rear fan doesn't need a filter because it should be used as a exhaust rather than an intake.  Just your intakes need filters.

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it would probably be better to remove it altogether. or if you want to be super ghetto, you could attach it to your rad as a half push/pull setup lol. with two fans pulling and one pushing.

hehe, i have enough 120's to have two push/pull setups, but i've heard that mixing different fans is not a good idea for some reason?

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