So, fan orientation?

[Five.Stars]

Installed an internal 240 rad to go along with my external 360. Anyway, the fans are currently mounted under the rad pushing air out through the radiator and case. This will however, be using the warmer air from inside the case to cool the radiator...

On the other hand I could reverse the fans to pull cooler ambient air in through the case and the radiator. But this will have the effect of increasing the temps inside the case.

So which would be best? Both have their negatives as far as I can see, but unsure as to which would be best.

System is down at the moment due to waiting on couple bits and pieces to finish it. Is it just going to have to be a case of trial and error with the orientation?

Fans are Scythe GT AP-15 1850rpm (although I generally run them at about 1000rpm) if that makes any difference.

 

[Devrij]

Installed an internal 240 rad to go along with my external 360. Anyway, the fans are currently mounted under the rad pushing air out through the radiator and case. This will however, be using the warmer air from inside the case to cool the radiator...

On the other hand I could reverse the fans to pull cooler ambient air in through the case and the radiator. But this will have the effect of increasing the temps inside the case.

So which would be best. Both have their negatives as far as I can see, but unsure as to which would be best.

System is down at the moment due to waiting on couple bits and pieces to finish it. Is it just going to have to be a case of trial and error with the orientation?

Fans are Scythe GT AP-15 1850rpm (although I generally run them at about 1000rpm) if that makes any difference.

It depends which components would suffer from the excess ambient heat, and whether their current temps are high enough to make that a bad thing. The only one I can think of that you may want to keep cooler is the gpu, but if you have a top-rear exhaust I can't see that kind of heat building up too much. You'd at least benefit from the positive pressure the extra intakes whould provide, keeping your dust intake to a minimum (if the rad fans are filtered in any way). Also, you get cooler air through your rad helping your cpu temps.

I would suggest trying it both ways and monitor temps.

 

[scotsdragon]

I would keep it as exhaust hot air rises so your working with the thermal dynamics, if you have a couple of intake at the front and the rad and rear as exhaust, the air flow of your case is descent and the air inside isnt hanging around to get hot anyway 90 percent of the heat you feel from the air above your rad is from your cpu being cooled not your case.