ATCS 840 Fan config

[martin_metal_88]

Hey guys, These day I have read and read again all review on ATCS 840 and HAF 932 and some silverstone to Finally get my Hand on a ATCS. Now I have a little question. I have replace the 2 230MM fan on the top by 3 120mm Yate Loon but I wonder what is the best fan config in this case ( for the 3 upper fan ) I actually set from rear to front 120 blow fresh air for H50 rad 120 push hot air out and the other blow in fresh air to. I don't really know why I have do it like that but screw is screw. Now I'm hopping some of you can tell me the best fan config for it.
Also notice that I would try to keep my H50 at the rear position of the 3 120MM.

If you need more ask me. I can't post pic of my rig because i'm not at home but I can paintshoped google picture to show you:P

Ask for more.

[morphy]

Not sure I get your config for the H50 but isn't the H50 supposed to intake from the rear 120mm? Which is different from the usual fan config. Anyway if that were the case I'd have the top 3 exhaust and if possible add a bottom 120mm as intake. Then you'd have :
Intake: front 1x230mm & 2x120mm(bottom and rear)
Exhaust: top 3x120mm
Edit: Just noticed that you have the Kama Bay in there _ I assume intaking. So you might not need the bottom 120. But it's kinda funky config, coz the kama bay would be almost directly opposite the H50 right? And both fans on either side blowing in? If you're adventurous might want to try reversing the fan on the Kama Bay, do some testing,might be better or might not. If that's the case, I'd add the bottom 120 intake for sure so you won't end up with too much negative pressure.

[martin_metal_88]

there is a really basic sheme of it all.

FAN ! : H50 = intake
FAN 2 : outake yateloon
FAN 3: Intake Yate loon
FAN4 : outake Yateloon
FAN5: Intake Kamabay
FAN6 : intake 230mm

[morphy]

Couple problems with the 3 top fans with alternating Intake>Exhaust>Intake. Hot air is just exhausted and cycled right back in plus it messes up the overall airflow. It's preferable to have air flow in one direction within the case.
And I realize that the H50 instructions are for the fan/rad to be installed as intake but there's an example where the fans were reversed and actually gave better performance (Corsair Hydro Series H50 CPU Water Cooling Kit Review - Results, and a "What If" Scenario - Legit Reviews). Granted the fans used for exhaust weren't stock fans but it's worth noting regardless. I'd go for something like:
Fan1: Exhaust
Fan2: disable
Fan3: Intake
Fan4: Exhaust (H50)
Fan5: Intake (KamaBay)
Fan6: Intake
That will give a bit more of a positive pressure.

For negative pressure you can try:
Fan1: Exhaust
Fan2: Exhaust
Fan3: disable
Fan4: Exhaust (H50)
Fan5: Intake
Fan6: Intake

And if you're sticking to H50 instructions with the fan at intake:
Fan1: Exhaust
Fan2: Exhaust
Fan3: Disable
Fan4: Intake (H50)
Fan5: Intake
Fan6: Intake
(fan3 disabled to prevent cool air from fan5 being exhausted prematurely)

In the first 2examples air is either being intaked from the front/front bottom/front top and exhausted to the rear/rear top.
In last config, cool air comes in thru front and rear and exhausted to the top.

Also since there'll be one fan unused, I'd put it at the fan holder at the drive cage just behind fan 6 (in same direction as fan6). It'll help with airflow as the interior of the ATCS 840 is really big and dead air areas can be a problem.