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Fan / Rad / Fan Stacking?

post #1 of 11
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Hi all!

I've decided to watercool my system and have been researching for about 2 weeks now. It seems every time I think of a cool setup it turns out to be a bad idea. (Rad stacking) I'm pretty much planning on cooling everything, NB/SB/RAM/CPU/DUAL GPU.

The rads seem to be the sticking point right now. Without doing any case mods I was thinking 240rad on top and 120rad on the exhaust.

Is it possible to do:

120mm 120mm
___240 rad___
140mm 140mm


The way the case is designed the 120mm will be on top of the case with the 220 rad and 140mm rad inside.

On that same thought for the back case exhaust rad:
120mm | 120rad| 140mm


So basically, will putting fans on each side of the rad increase performance significantly? Are there any rads that mount in a 120mm slot that allow 140mm fans?

I'll probably start a new thread with the total build when I have a better idea.

EDIT: I'm not talking about stacking radiators. I'm talking about FAN / RAD / FAN. Or push/pull. (Thanks for the clarification in the thread.)
Edited by Intangible - 2/16/11 at 2:59pm
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post #2 of 11
What's a 220mm rad?

You're getting a little carried away with the amount of radiator you think you require.

Figure out a way to put a 280mm (2x140) rad on the top, and a 120mm in the back and you'll be fine.
    
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post #3 of 11
I dont have an answer for you but id like to know too. I have a HAF 912 Plus and it has a space at top for a dual 120mm radiator. Now I wondered about having two dual radiators. One on the inside and one on the outside right above it. Logically I would assume it just would not get as cool on the upper radiator but wether or not it would be so ineffective that it would negate the second radiator is unknown. I also wanted to add two smaller single 120mm on each side of the 120mm fan grill on the back side of the case too. If anyone has had any experience with this it would be really good if you had some temps and pictures etc... thanks
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post #4 of 11
Quote:
Originally Posted by Intangible View Post
So basically, will putting fans on each side of the rad increase performance significantly? Are there any rads that mount in a 120mm slot that allow 140mm fans?
Not significantly, but a couple of degrees. I think it depends on the fan speeds, too.

And I saw a picture the other day of a new radiator with both 120 and 140mm fan screw holes. However, I'm not sure if any are available yet.

Stacking radiators doesn't help. From what I hear, it even increases temperatures at low fan speeds.

And, like Ronin de Beatrice said, you probably meant a 240mm or 280mm radiator. You might have mounting issues if you want to mix fan sizes though.
Edited by t-ramp - 2/16/11 at 2:20pm
post #5 of 11
Fan stacking? We call it push pull. I use it, fans on both sides of the radiator.
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post #6 of 11
Push/pull...yes.

As long as the 140mm mounts to your rad...it should work.
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post #7 of 11
Hmm I did just find this and the results look very promising.


http://forums.pureoverclock.com/showthread.php?t=5187






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post #8 of 11
Arg... No you realy dont want to mix fans like that .120 on one side and 140 on other.
The point in why not the air presser is different. And will make the fans work harder and die alot faster. I had pushpull on rads, makes a difference depending on fans. R4 fans made a difference But you want = air presser on both side. Only one rad i know that has 120mm holes and 140 is the monster by feser. I got a 480 rad in my case (4 X 120 mm fans or 120.4) Looking @ case looks like you need a 240 rad. Only thing that conserdes me is space. U cant mount a pushpull setup on it With a THICK rad. like feser. I got a spare 240 feser rad here (never used) and with 2 120 mm fans on it it would not fit on top of you case I belive. Get some gt 1850 fans and a 240 rad and try But measure first
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post #9 of 11
Thread Starter 
Quote:
Originally Posted by RonindeBeatrice View Post
What's a 220mm rad?

You're getting a little carried away with the amount of radiator you think you require.

Figure out a way to put a 280mm (2x140) rad on the top, and a 120mm in the back and you'll be fine.
Sorry, I meant 240mm. 2x120 fans. All the 120s were messing with my head. I think a 280mm would be great as I'm using a Noctura push/pull with a 140mm and it's virtually silent. My case has holes for 2x 120mm on top already, so I suppose all I would need to do is drill 140mm holes.

As for the amount of rad I require, I'm planning on OCing everything. Dual 6950s put out serious heat. Just reading through posts it seemed to me that a 240mm rad would be enough for a dual GPU loop. This would leave a 120 rad for Ram/cpu/NB/SB. (or 140 if I mod.)
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post #10 of 11
Thread Starter 
Quote:
Originally Posted by GfhTattoo View Post
Arg... No you realy dont want to mix fans like that .120 on one side and 140 on other.
The point in why not the air presser is different. And will make the fans work harder and die alot faster. I had pushpull on rads, makes a difference depending on fans. R4 fans made a difference But you want = air presser on both side. Only one rad i know that has 120mm holes and 140 is the monster by feser. I got a 480 rad in my case (4 X 120 mm fans or 120.4) Looking @ case looks like you need a 240 rad. Only thing that conserdes me is space. U cant mount a pushpull setup on it With a THICK rad. like feser. I got a spare 240 feser rad here (never used) and with 2 120 mm fans on it it would not fit on top of you case I belive. Get some gt 1850 fans and a 240 rad and try But measure first
I'm using a Noctua NH-D14 air cooler which uses the push/pull system with a 140mm internal, 120mm external. Sink | 140mm | Sink | 120mm.

There should be plenty of space for 240mm rad in my case. The rad mounts below the top and the fans mount in the grill on top of that case.

Also can anyone clarify the push/pull method? Isn't that simply fans pushing in the same direction? Fan --> | Radiator | Fan -- > (air flow direction)

For simplicity sakes since this is my first time I'm going to scrap the 140mm idea and stick with 120s.
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