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Intake Vs. Exhaust Fans Ratio - Page 2

post #11 of 20
Quote:
Originally Posted by kieran13;14304144 
hot air rises :-)

Not if a fan is pushing it elsewhere
post #12 of 20
Take advantage of checking this out here http://www.overclock.net/air-cooling/1037539-intake-fan-5-25-bay-warning.html you got the perfect case to stick a 120mm fan under your burners, to create a tunnel effect right out to the rear fan on the case. Will give you the best temp drops if you got good fans for this, try keeping front fan matching cpu intake and cpu exhaust and rear fan all the same for max efficiency in cooling not just cpu but ram too and mobo. Once you do this then check temps and keep playing around with the other fans till you find that magic point
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post #13 of 20
Quote:
Originally Posted by kieran13;14304144 
hot air rises :-)

Erugh. Hot air will go where ever you push it. That's the point of fans.
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post #14 of 20
Thread Starter 
Ok. So I switched some stuff around a little bit. Now, I only have 6 fans atm, 2 on the cpu, 4 for the case.

I took the bottom hard drive bays out and added another intake down there. So now it looks like this, with the cooler blowing to the back exhaust.

692setup.jpg

I'm getting decent temps with this, a tiny bit better than I was before. But that's probably due to taking the HD bay out. Opening things up a bit.

Anyone see any glaring issues now? Or should this be about right?
    
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post #15 of 20
Looking good! I've spend an eternity figuring out my CM 690 II airflow.
It's the same as yours but just with maor fans. 3 extra intakes (bottom, side, modded in bays) and 1 extra exhaust (top). I'm still thinking about adding a exhaust in the upper side panel slot.

Love the case. smile.gif
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post #16 of 20
Thread Starter 
Sweet. My thanks and Reps! Ill stick with this.
    
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post #17 of 20
The way I have my PC setup is equal pressure biggrin.gif

120 going 120 going. CPU is completely and utterly isolated from the rest of the system with a home made shroud that sucks air in from the vent.
 
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Gsvlip Dudyrm
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post #18 of 20
Quote:
Originally Posted by nyates;14318831 
Ok. So I switched some stuff around a little bit. Now, I only have 6 fans atm, 2 on the cpu, 4 for the case.

I took the bottom hard drive bays out and added another intake down there. So now it looks like this, with the cooler blowing to the back exhaust.

692setup.jpg

I'm getting decent temps with this, a tiny bit better than I was before. But that's probably due to taking the HD bay out. Opening things up a bit.

Anyone see any glaring issues now? Or should this be about right?

mines basically the same 2x140 on top 1x140 front 1x120 freakin huge sunon denki bigboy on bottom with corsair h70 p/p exhuast and it keeps the case @20c
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post #19 of 20
IMO you're missing a big bet.

You have one of the finest cases for air cooling. In particular, you can put your top fan in the forward position as an intake. The leave your rearward top fan position open. My own airflow has zero exhaust fans:

Beta_Evo_Quiet_Rig-C_03.png

Why do I have no exhaust fan? Because I don't need one. See item 2 for the experiment I did that demonstrates how little we need an exhaust fan.

Basically, the more cool air you can present to the face of your heatsink's push fan, the better. The less resistance you present to air that wants to leave, the more gets out. With no rear grill you cannot really build up any pressure in your case - no positive pressure, just positive airflow.

Others have done fine by leaving in the rear grill and using an exhaust fan. In your own case, setting up multiple fan configurations and testing them is the right thing to do. Keep it up.
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secundus
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alpha updated
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post #20 of 20
Here Read These:



http://www.silverstonetek.com/techtalk_cont.php?tid=wh_positive&area=usa


and


http://www.silverstonetek.com/techtalk_cont.php?area=usa&tid=wh_airflow



Both are good reads and should help you alot.
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First Build :)
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