Help in fans position

[HugeDamage]

Folks - I need your help in fans position.

I tried all the possible fan distribution i can think of ... The only setup that i can see ot really reduced the temp specially for my gpus is as follow

1 200mm front as intake
3 top fans as out take 2 connected to radiator for cpu and 1 is general out take
1 rear 140 mm out take.

Do you think I need 1 more intake ?

I have tried to place 2 120mm in front of the gpu but the temp just increased and when i took them out the temp decreased.

PS : I am using this Case http://www.amazon.com/dp/B00K6S1B3Q/?tag=pcpapi-20

 

[JackNaylorPE]

First of ... how many fans go in versus out has minimal effect on cooling. The case doesn't really know which way they go... just how many times the air changes per minute. Whether they blow in or out depends much more on their location than how many go either way. If you match the air going in and out exactly, then you have eliminated on of the cases best cooling features, the large grille area on the back panel. If you have more in than out, you also create a dust collector.

I have that case, I also have the Enthoo Luxe and the Enthoo Primo ...all of them have superb cooling capabilities.

1 200mm front as intake - good here

3 top fans as out take 2 connected to radiator for cpu and 1 is general out take - Bingo. Radiator fan ALWAYS blow in no exceptions. yes, I know... we all learned in 8th grade earth science that hot air rises. In your house, warm air will slowly rise and stay near the ceiling ..... BUT NOT WHEN THE CEILING FAN IS ON.

1 rear 140 mm out take. - leave this where it is.

I assume you put two 120's on the back of the HD cage .... so they were blowing back towards the rear of the case .... while your other fans were sucking air in from the rear of the case in the exact opposite direction so two air flows were working against each other.

Rear grille intake => ... <= two 120mm fans

1. With 4 fans out and just the one fan in, you are sucking air into the case from the rear grille ...right after your GPUs blow out some of their hot air, you are sucking that hot air right back into the case.

2. Read your cooler manual. I have yet to see one that says blow air out of the case.... can't imagine why they would say ... "let's cool that radiator with preheated air from inside the case instead of nice cool outside air."

3. Move the 3rd top fan to the bottom and use it as an intake fan

Objectives:

a) Eliminate negative pressure situation and get air exiting the rear grille instead of sucking air (and dust) in
b) Get air moving in the same direction, front to back rather than have two air streams fighting against one another.
c) Increase CPU cooling by not using preheated air for radiator cooling
d) Eliminate pulling hot GFX card exhaust air back into the case thru rear grille

(1) Bottom Fan = Intake
(1) Front fan = Intake
(1) Rear Fan = Exhaust
(2) Top Radiator Fans = Intake
(1) Rear Grille = Exhaust

My son has twin 970s in an Enthoo Luxe with a rad on top set up this way except he has:

(2) Bottom Fan = Intake
(3) Top Fans = Intake (2) on radiator (H240-X), one just blowing in

The GPU fans rarely turn on ....

BTW, what card and how hot are they getting ?

 

[JackNaylorPE]

Internet burped... dbl post

 

[HugeDamage]

First of ... how many fans go in versus out has minimal effect on cooling. The case doesn't really know which way they go... just how many times the air changes per minute. Whether they blow in or out depends much more on their location than how many go either way. If you match the air going in and out exactly, then you have eliminated on of the cases best cooling features, the large grille area on the back panel. If you have more in than out, you also create a dust collector.

I have that case, I also have the Enthoo Luxe and the Enthoo Primo ...all of them have superb cooling capabilities.

1 200mm front as intake - good here

3 top fans as out take 2 connected to radiator for cpu and 1 is general out take - Bingo. Radiator fan ALWAYS blow in no exceptions. yes, I know... we all learned in 8th grade earth science that hot air rises. In your house, warm air will slowly rise and stay near the ceiling ..... BUT NOT WHEN THE CEILING FAN IS ON.

1 rear 140 mm out take. - leave this where it is.

I assume you put two 120's on the back of the HD cage .... so they were blowing back towards the rear of the case .... while your other fans were sucking air in from the rear of the case in the exact opposite direction so twho air flows were working against each other.


1. With 4 fans out and just the one fan in, you are sucking air into the case from the rear grille ...right after your GPus blow out some of their hot air, you are sucking that hot air right back into the case.

2. Read your cooler manual. I have yet to see one that says blow air out of the case.... can't imagine why they would say ... "let's cool that radiator with preheated air from inside the case instead of nice cool outside air."

3. Move the 3rd top fan to the bottom and use it as an intake fan

Objectives:

a) Eliminate negative pressure situation and get air exiting the rear grille instead of sucking air in
b) Get air moving in the same direction, front to back rather than fighting against one another.
c) Increase CPU cooling by not using preheated air for radiator cooling
d) Eliminate pulling GFX card exhaust air back into the case thru rear grille

(1) Bottom Fan = Intake
(1) Front fan = Intake
(1) Rear Fan = Exhaust
(2) Top Radiator Fans = Intake
(1) Rear Grille = Exhaust

My son has twin 970s in an Enthoo Luxe with a rad on top set up this way except he has:

(2) Bottom Fan = Intake
(3) Top Radiator Fans = Intake

The GPU fans rarely turn on ....

BTW, what card and how hot are they getting ?

Thank you for your detailed response.

I am running 2x GTX 980 Ti and after the last fan setup I am getting max of 70c for 1 GPU and 65c for the second one.

I am welling to do your setup as follow:

(1) Bottom Fan = Intake - I need to find out where I can put this fan as I have the PSU in bottom and then in the right side is the front 200mm intake.

(1) Front fan = Intake - Done.

(1) Rear Fan = Exhaust - No Place for this as there is only space for the Grille fan

(2) Top Radiator Fans = Intake - I need to flip the radiator as I have this setup as exhaust ( this is what I am using http://www.amazon.com/gp/product/B010NS1LVA?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s03)

(1) Rear Grille = Exhaust - Done.

Please refer for the pictures below

 

[KingDingDong]

Jack, great piece. Regarding the radiators. How many cars pull heated air from the engine compartment and blow it out the front grill?

 

[HugeDamage]

Jack, great piece. Regarding the radiators. How many cars pull heated air from the engine compartment and blow it out the front grill?

None 🙁 .. I will change that ... Is it good to have the fans blowing air in down the radiator or on top of the radiator ?

 

[KingDingDong]

From my understand both is best. Push/pull. Gets a little thick however.

 

[HugeDamage]

Setup change .. but my gpu temp went all the way to 77c instead of 70c

 

[GObonzo]

those top radiator fans need to be blowing out\upwards. all of your CPU temps are coming right back into your case now!
push/pull means you have 2 fans on one heatsink or radiator. 1 fan on 1 side blowing into it/1 fan on 1 side blowing away from from it.
also, if you add a side intake blowing over the GPU it should help some more.
looks nice though.