H100i Placement as well as Storm Stryker Fan setup

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Want2Build

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Nov 30, 2013
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So i made this diagram to further analyze whether or not i have the idea right or not...

Fans just confuse me!

I'm wondering does the "ugly" side have to be shown to be pulling air in or pushing air out?

All i know is im very confused about this fan business.

I do not want the sp120s on my h100 to be exposed on the ugly side, i want them lookin nice.

Does it matter if i have them on the bottom of the rad blowing air down like that?


Any help is appreciated, I know my english isnt good and im not the best at explaining. Thank you.


10hlfdf.jpg
 
Solution
Karadjgne
Sorry, forgot, the exhaust is not a problem. Between the airflow of the larger fan, and the airflow from your GPU exhaust, you are good. You actually want "positive" pressure inside the case, which means more air coming in than is going out. This has the single biggest bonus of keeping your computer as dust free as your dust filters will allow. If you have more exhaust than intake, you create 'negative' pressure in the case. Basically a vacuum. That is a huge detriment to your computer. It will pull air from wherever it can get it, every little crack and crevice will be used, and those have no filters, basically filling your case with dust in next to no time. That makes for a short lived computer.
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JackNaylorPE

JackNaylorPE

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Rad fans should always bring cool outside air into the case.

Low speed fans work better in pull..... high speed fans work better in push .... from 1500 - 1800 rpm it's a tossup.

http://martinsliquidlab.petrastech.com/Radiator-Fan-Orientation-And-Shroud-Testing-Review.html

Push Vs Pull - This depends on fan speed/power. The high speed fans at 2000RPM with a 38mm fan thickness provided the best performance in a push condition. The slow speed fans with 1350RPM with a 25mm fan thickness provided the best performance in a pull condition. I would estimate that performance line is likely to cross in the 1500-1700RPM range where they are equal. So.... slow speed = pull, high speed = push, medium speed = it doesn't really matter.
Click to expand...

Of course Corsair's 2600 rpm is in its own category.
 
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Want2Build

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I'm sorry i'm trying to understand what your saying i just don't.

What i have listed is Push (Right?)

What i'm mostly confused about is if the back fan is enough exhaust since the rest of the rest are running intake right? :O Sorry for all the dumb questions. I feel like a preschooler with the ABC's.
 
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Karadjgne

Karadjgne

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Your SP-120 QE fans spin @1450 rpm, right below the sweet spot martins labs has tested for radiator fans. Therefore according to them, your fans would be better used in a "pull" direction.

Pull: (airflow <---)(ugly side)---Fan---(nice side)-Radiator-(airflow <---)

Push:(airflow --->)(nice side)---Fan---(ugly side)-Radiator-(airflow --->)

So IF you can mount the radiator above the top of the frame, under the lid (saves space) or just to the underside of the top of the case, the fans will be mounted below. Airflow will be as you pictured. However, you will see the "ugly side" of the fans.
Because you are so close to the "sweet spot" it really wouldn't hurt the radiators performance to use the fans in "push". That way you would see the "nice side" of the fan. This would mean however that your picture would be backwards, and the h-100i would be acting as a top mounted exhaust. This would have the side affect of limiting your airflow through the case and the motherboard components would run several degrees warmer.
The last option, is mounting your fans on top of the radiator, sandwiched between the radiator and the case, or with the fans mounted outside the frame, but under the lid.
In this, you will not see any part of the fan, except the sides, or if mounted under the lid, you won't see them at all, unless you pop the lid off, in which case you will see the 'nice side' of the fans, that is a "push" direction, but airflow will be just as in your picture. You will however have a direct look at your radiator grill.

Its unfortunate, but computer fans are simply not designed to run in reverse.
 
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Karadjgne

Karadjgne

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Sorry, forgot, the exhaust is not a problem. Between the airflow of the larger fan, and the airflow from your GPU exhaust, you are good. You actually want "positive" pressure inside the case, which means more air coming in than is going out. This has the single biggest bonus of keeping your computer as dust free as your dust filters will allow. If you have more exhaust than intake, you create 'negative' pressure in the case. Basically a vacuum. That is a huge detriment to your computer. It will pull air from wherever it can get it, every little crack and crevice will be used, and those have no filters, basically filling your case with dust in next to no time. That makes for a short lived computer.
 
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Solution
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Want2Build

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I think i just about got what your saying now! thanks a lot.

If i have any more questions i suppose ill just ask.

I really wont completely know until i start putting it together myself, right? :)

Thanks!
 
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