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Airflow in Fractal Design R3

post #1 of 17
Thread Starter 
Hey everyone, I've purchased x3 Corsair AF120s and x1 SP120 for my build to have all matching fans.
Now, the idea obviously with the corsair fans is the coloured trim. would this fan configuration work effectively?
Having them like this would allow all the fans to show the coloured trim
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post #2 of 17
in a word no. Turn the bottom into an intake and depending on what cooler you are running you may find turning the top front fan to intake or even off may work better. I have seen a few cases where the bottom fan exhaust gave better GPU temps than intake. Might also want to remove the unused PCI slot covers for intake/exhaust of air. You can check if a vent wtih fan off is working intake or exhaust with a candle flame or incense stick.
Edited by doyll - 3/19/13 at 3:28am
post #3 of 17
Why will the H60 be placed on the bottom fan mount location?

I would place it on the rear fan mount location.
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post #4 of 17
Thread Starter 
Quote:
Originally Posted by edsai View Post

Why will the H60 be placed on the bottom fan mount location?
I would place it on the rear fan mount location.

My H60 is on my GPU, I think maybe I should experiment with the orientation of the pump and move it to the rear. I need to have the fan on the pump as a push as it is a corsair static pressure fan, unless anyone can tell me if it works just as well as a pull?
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post #5 of 17
I don't known if the bottom fan as exhaust should be or not the best fan setup.

Usually the psu fan is faced down in order to intake the flesh air outside the case.
If you place the rad fan at the bottom mount location as exhaust the psu will intake the rad warm air.
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post #6 of 17
Most fans pull air just as hard as they push air. Some are a little better one way or the other but not much. Static pressure is based on the difference between intake and exhaust pressure. It's the h2o mm lift in pressure differential needed to stop airflow.

As for pulling air into cooler from outside of case and dumping it inside it's reverse logic. You what you case as cool as possible so components in case stay cool... so why would you want to pull air though a radiator into case causing the case to be hotter???

PSU will be fine with the radiator venting out bottom. Look at older case design.. they all had PSU drawing air from inside of case... usually from just above CPU cooler in top back of case.
Edited by doyll - 3/19/13 at 3:38am
post #7 of 17
Thread Starter 
Quote:
Originally Posted by doyll View Post

As for pulling air into cooler from outside of case and dumping it inside it's reverse logic. You what you case as cool as possible so components in case stay cool... so why would you want to pull air though a radiator into case causing the case to be hotter???
.

This is an excellent point actually.
So, really, the fan set up I originally posted is probably the best way because I want all the fans to have their coloured trim on show, and unfortunately it's only on one side so flipping one of the fans over the other way hides the trim frown.gif
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post #8 of 17
The problem is you have twice as much area exhaust as you have intake. So only half of exhaust is going to be effective. Ideally you want about the same intake and exhaust area and cfm rating. I prefer slightly more cfm in than out. Reason is this makes inside of case a little higher pressure than outside so dust doesn't leak into case though every little air leak.. like around power switch, USB sockets, mic and headphone jacks, optical drive/drives, etc... and every crack in case will collect dust too.

What are you using to cool CPU?
post #9 of 17
Thread Starter 
I've got a CM 612s on my CPU.
I could put a fan as an intake on my side panel?
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post #10 of 17
Could you try unplugging your top front intake fan and see what that does?

It's very possible it will give you cooler temps.

My R2 has 3x TY-140 intake fans and no exhaust fans. Bottom vent grills and back vent grill are removed and case sets on a caster base with 50mm clearance to bottom vents.
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