Help with fan setup

[martward]

Hi all,

 

I have a FD Meshify C and currently I have two Arctic P14s as intakes in the front, an Arctic P12 as exhaust in the top and a Corsair H75(2018) with a push/pull configuration as exhaust in the back.

The top fan is right above the CPU and I could in theory put another Arctic P12 I have laying around also in the top. My question is would this be useful at all? If I do that then the air coming in through the top 140mm intake would be exhausted again straight away by the top fans meaning the air doesn't really get to the radiator in the back right?

I feel like having it as an intake probably also won't do much good; even though it would blow on the back of my GPU I am guessing it would just pull in the hot air that was exhausted by then fan next to it.

 

Any ideas?

Should I just leave it open or do I still install a fan in that open slot?

 

Thanks

[BigDamn]

Not sure if I understand you correctly, but it sounds like you want to have both exhaust and intake fans on the top, no? If that is correct, that would defeat the purpose of having top mounted fans. You would want to have both of your top fans as exhaust. General rule, front and side fans are intake, top and rear are exhaust.

[martward]

1 minute ago, BigDamn said:

Not sure if I understand you correctly, but it sounds like you want to have both exhaust and intake fans on the top, no? If that is correct, that would defeat the purpose of having top mounted fans. You would want to have both of your top fans as exhaust. General rule, front and side fans are intake, top and rear are exhaust.

Yes exactly. My main question is whether it makes sense to put two fans in the top, since I fear they will just exhaust the air coming in through the front fan before it even reaches any components. Is there any reason to have two top mounted exhaust fans if there is no radiator in the top?

[BigDamn]

1 minute ago, martward said:

Yes exactly. My main question is whether it makes sense to put two fans in the top, since I fear they will just exhaust the air coming in through the front fan before it even reaches any components. Is there any reason to have two top mounted exhaust fans if there is no radiator in the top?

Generating airflow throughout the case gives a nice breeze over your motherboard, radiator, etc. This also helps eliminate heat building up inside your case which can eventually lead to "heat soaking" (more of an issue on air coolers).

[StarsMars]

 

My ms paint skills. This is what I'm thinking.

[martward]

8 minutes ago, StarsMars said:

 

My ms paint skills. This is what I'm thinking.

Awesome pictures!

So the third intake fan in the bottom would in my case basically be cooling the back of the PSU, since it would be for the most part beneath the PSU shroud. This is why I went for two 140mms in stead of 3 120mms. Right now the "idea" behind the airflow is that the top 140mm blows air over the motherboard and towards the CPU radiator in the back, while the bottom 140 blows most of it's air over and under the GPU. It's that short top 'draft line' in the last picture that doesn't seem very useful to me and makes me wonder whether it wouldn't be detrimental to the airflow if I were to throw in a second fan in the top.

[StarsMars]

2 minutes ago, martward said:

Awesome pictures!

So the third intake fan in the bottom would in my case basically be cooling the back of the PSU, since it would be for the most part beneath the PSU shroud. This is why I went for two 140mms in stead of 3 120mms. Right now the "idea" behind the airflow is that the top 140mm blows air over the motherboard and towards the CPU radiator in the back, while the bottom 140 blows most of it's air over and under the GPU. It's that short top 'draft line' in the last picture that doesn't seem very useful to me and makes me wonder whether it wouldn't be detrimental to the airflow if I were to throw in a second fan in the top.

So what I think the "problem" with the set up labeled turbulence that is misspelled..is that you want air to be flowing in over the components and out. The turbulence impedes the flow of fresh air. This is all just me talking though. I have a PHD in BS.

 

Chances are there won't be a noticeable difference. There is no reason to not throw it on if you have an extra fan sitting around.

Stick it on and record your temps. Would be interested to see what happens.

[martward]

24 minutes ago, StarsMars said:

So what I think the "problem" with the set up labeled turbulence that is misspelled..is that you want air to be flowing in over the components and out. The turbulence impedes the flow of fresh air. This is all just me talking though. I have a PHD in BS.

 

Chances are there won't be a noticeable difference. There is no reason to not throw it on if you have an extra fan sitting around.

Stick it on and record your temps. Would be interested to see what happens.

Yeah the turbulence setup is not one I'm considering. I have the first setup now and am trying to figure out whether the last one makes sense. 

[LogicalDrm]

Whats the reason why you are looking to switch things around? Temps?

[martward]

1 hour ago, LoGiCalDrm said:

Whats the reason why you are looking to switch things around? Temps?

Well my GPU temps are a bit high, around 75C under load. But it's part slightly improving temps, partly that I have a decent fan lying around doing nothing and partly plain curiosity.