Which way should the air flow for High clearance mode?

[elioncho]

Hi guys,

 

I am building my first pc and I have a Noctua NH-L12S, an Asus Rog Strix z370-I motherboard and a Cooler Master 110 case. I can't place the Noctua in low profile mode because it interferes with the ram on the motherboard. I will have to put the fan above the fins. The thing is that I see in most videos that when they put it above, they also change the orientation of the fan (air going down to the motherboard). Why is that? I don't understand.

[Canada EH]

Depends on the sorroundings of where your pc will be placed. Ideally air flow in from the front, and out on the rear or top.

 

Air going onto the cpu then out is better cooling but you want unrestricted input and output of air. Also depends on your case, and the internals like your ram issue.

[elioncho]

2 minutes ago, Canada EH said:

Depends on the sorroundings of where your pc will be placed. Ideally air flow in from the front, and out on the rear or top.

 

Air going onto the cpu then out is better cooling but you want unrestricted input and output of air.

Air enter the case through the front and the mother board is at the bottom. So what should be the orientation of the fan airflow? Up?

[Canada EH]

air flow in from the front, mobo is on the bottom so its like a mini or a case where the monitor goes ontop, so you want the air output to go where ever there is an opening or a grill/filter. If you can snap a picture, would help.

[elioncho]

4 minutes ago, Canada EH said:

air flow in from the front, mobo is on the bottom so its like a mini or a case where the monitor goes ontop, so you want the air output to go where ever there is an opening or a grill/filter. If you can snap a picture, would help.

This is basically the case, see the mobo at the bottom, air intake at the left:

 

[Canada EH]

so the front of the pc would be on the right bottom, I see the O/I there

the rear is on the left, where that fan is, which can be intake or outtake.

under the psu would be a dvd opening, or you could use it as air intake.

then you have the face of the pc facing the camera and the back and the top

Either one could potentially have an air grill.

 

I would put the left fan as outtake, and have airflow go over the mobo from the front or back or dvd slot the top is useless for airflow.

 

I'd be sure airflow comes directly in over the top of the ram for height of the intake fan, so airflow goes over top mobo and exits big fan on left.

 

 

I am just not too up to date on those htpc type square cases.

[WoodenMarker]

Does the cooler fit with the fan at the top? The case's clearance is listed as 76mm and the cooler should be 85mm tall with the fan installed at the top.

[LogicalDrm]

The fan is supposed to be blowing towards motherboard. Thats why its called down-draft cooler. It works same way as stock coolers. Pushing cool air through fins and cooling vrm's at the same time. It wouldn't have enough effect other way around.