CM Storm Trooper - Switching rear fan to intake?

[pete21121]

Sup guys,

So i've been thinking positive case pressure would be an easy way to minimise dust in my rig, so the simple solution for that seems to be to switch the rear 140mm to an intake (with a filter of course). That would mean i'd have the 2x120mm taking in air from the front, the 140mm from the rear, and 2x120mm expelling it through the roof.

My only question is, would that interfere with the performance of my CPU cooler, which is obviously blowing air towards that rear fan? Or would the difference be fairly negligible?

Cheers all

 

[Feronix]

That would probably not be the best idea, no. It would get noisy and warm.

I think in your case (no pun inteded) the best you can do is leave the rear fan as an exhaust and remove the top 2 fans to let heat passively rise out of the top of the case.

 

[pete21121]

What would be your thoughts on sticking the 2 roof fans in the bottom as intake fans? Then all the fans would dust filtered, and case pressure would be positive. I don't really want to ditch them altogether; i shelled out for some hawt Bitfenix fans, so it seems a shame not to use them.

 

[tinytomlogan]

I run the rear on Orca as an intake

 

[Feronix]

I run the rear on Orca as an intake

Difference here is that you're watercooling and he's using an air heatsink that's pushing the air towards the back of the case.

What if you rotate the air heatsink 90 degrees and let it push the air towards the top of the case? As long as it's not too close to your GPU.

What cooler are you running?

 

[tinytomlogan]

Ahhh with air it would be ok too if the heatsink fans were reversed as well


He can easily test it and record temps

 

[Xavi C]

Your CPU will definitely love to breath direct fresh air if you flip the cpu heatsink 180 degrees (I had it like that for a while). But, depending on your setup, it could be that the 2x120 are not able to cope with all the heat if they are set in low speed, so your case temps can go up, specially in the RAM area.

 

[pete21121]

The CPU cooler will run in any direction i should think, it's not one of the mahoosive ones. http://forum.overclock3d.net/showthread.php?p=552431 <-- Rig is exactly how it was there - been out of the country for a good while and i'm just planning upgrades for when i get back haha.

Thinking one solution might be to buy another two 120mm fans and stick them in the bottom, then play with fan speed reducers so it doesn't sound like a jet taking off. I'm not massively bothered by noise, but i like to keep it sensible.

But yeah, like Tom says, i can always play around and see what works best.

 

[demonking]

or buy a fan controller and set each fan for positive pressure (i.e turn down the exhausts and leave the intake at stock?) you dont want the rear fan pulling in hot air from the psu exhaust

 

[vorticalbox]

or buy a fan controller and set each fan for positive pressure (i.e turn down the exhausts and leave the intake at stock?) you dont want the rear fan pulling in hot air from the psu exhaust

the fans are far enough apart not to cause a problem plus i don't think i've felt warm air come from newish PSU (minus the old ones used in my college)