Fan Questions

IncognitoX

IncognitoX

IncognitoX

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Hey, I have the Zalman Z9 Plus Case with the 4 Fans pre-installed.

I have tried moving them around to get the best air movement and noise reduction.

Is it better to have no fans on the side vent and have two fans on the top vent, pushing air out of the case so that it pulls air through the side vent.

Or the other way round? The sound from the fans on the side vent is awful, even with the power down.

Thanks in advance!
 
I would say the two exhaust fans a the top thus maintaining a streamed air flow from front to back. A side fan may cause an interruption to this flow.

In saying that , I have a gentle side fan over the chip-set but this doesn't ran like the chassis fans.
 
Admiral Huddy said:
I would say the two exhaust fans a the top thus maintaining a streamed air flow from front to back. A side fan may cause an interruption to this flow.

In saying that , I have a gentle side fan over the chip-set but this doesn't ran like the chassis fans.
Click to expand...

So to confirm, I have 5 fans now altogether.

So 1 exhaust fan (Out), 2 top vent fans (Out), 1 floor vent fan (Out) and 1 front vent (In)

Thanks!
 
Its down to how you want it, a side fan wouldn't cause any problems or negative areas.

On mine i have,
2x 120 front Venom's, intake
1x 120 side Venom, intake
2x 120 in Push an pull with rad at the back, Venoms, intake
2x 120 top Venoms, out take

In a CM HAF 912 PLUS temps are great no negative flow either.
 
CyberCrow said:
Its down to how you want it, a side fan wouldn't cause any problems or negative areas.

On mine i have,
2x 120 front Venom's, intake
1x 120 side Venom, intake
2x 120 in Push an pull with rad at the back, Venoms, intake
2x 120 top Venoms, out take

In a CM HAF 912 PLUS temps are great no negative flow either.
Click to expand...

Thanks for your advice!

The noise is driving me crazy aha, must be vibration from the case.

I'll try a setup similar to that and see if everything improves.
 
IncognitoX said:
So to confirm, I have 5 fans now altogether.

So 1 exhaust fan (Out), 2 top vent fans (Out), 1 floor vent fan (Out) and 1 front vent (In)

Thanks!
Click to expand...

With the fans in the places you have them I'd turn the floor fan round so that it's an intake.

As it is now it's pulling air out of the case from the cool air stream being pushed in by the front intake.

As you mention noise and virbration, Are you running all of these fans on 12v ?
 
Resident said:
With the fans in the places you have them I'd turn the floor fan round so that it's an intake.

As it is now it's pulling air out of the case from the cool air stream being pushed in by the front intake.

As you mention noise and virbration, Are you running all of these fans on 12v ?
Click to expand...

I'm not too sure, Two fans are running through the fan controller, others off the MB and one via 4 pin to the PSU.
 
lilsammy said:
@Cybercrow you should have the fans setup to work in negative pressure.

Have more air flow out than in this will create a negative pressure effect.

See this article for testing of both positive and negative pressure: http://rog.asus.com/87672012/overclocking/positive-or-negative-pressure-cooling/
Click to expand...

That "test" is a total waste. Gross misuse of the word "negative" to start with and just keeps on going down.

Don't know about you but I want more cfm rating coming into case than out. Reason is having slight more barometric pressure inside of case helps keep dust from coming in through every little crack, hole, crevice, etc... including optical drive. My cases don't even have exhaust fans, only filtered intakes. All are TY-140 fans; 2x front & 1x bottom. (PSU is bottom filtered intake as well) The force of the intake air easily pushes air out the exhaust vents so why make more noise with exhaust fans?

Wife's case has 4x Antec Tri-Cool filtered intakes running on low speed.. and no exhaust fans. Again, the force of intake air easily pushes air out of case.

On a previous setup I did need an back exhaust fan, but it was need to create airflow over motherboard to keep chips cool.. and I didn't like the look of an extra fan inside of case blowing on motherboard. ;)
 
Is it possible or advised to connect two fans together (On top of one another) to create a dual exhaust fan?

What could I use to do this?
 
IncognitoX said:
Hey, I have the Zalman Z9 Plus Case with the 4 Fans pre-installed.

I have tried moving them around to get the best air movement and noise reduction.

Is it better to have no fans on the side vent and have two fans on the top vent, pushing air out of the case so that it pulls air through the side vent.

Or the other way round? The sound from the fans on the side vent is awful, even with the power down.

Thanks in advance!
Click to expand...

Cooling Component in stock case:
( ) Denotes Included
Front
120 mm or 140mm Fan x1
(120mm Blue LED Fan x1)
Top
120mm or 140mm Fan x2
(120mm Blue LED Fan x1)
Bottom
120mm or 140mm Fan x2 (Optional)
Rear
120mm Fan x1
Side
120mm Fan x2 (120mm Blue LED x1)


My recommendation:
Front:
* A good 140mm intake
* If you are not using 3x optical bays put a 2nd intake in there.
Top:
* Just leave it open
Bottom:
* A good 140mm intake with filter (magnetic attaching ones are great) Raise case so you have 40-50mm clearnance for good airflow to bottom fans.
Rear:
* 120mm exhaust fan
Side:
* A side fan intake can sometimes help cool GPU.

I use casters on bottom for clearance and easy movement ;)
 
Last edited:
lilsammy said:
@Cybercrow you should have the fans setup to work in negative pressure.

Have more air flow out than in this will create a negative pressure effect.

See this article for testing of both positive and negative pressure: http://rog.asus.com/87672012/overclocking/positive-or-negative-pressure-cooling/
Click to expand...

Not really no the flow is good, the intake on my rad gets pulled out straight away from my out take above.

The 2 front intakes are at various heights in my case with the side intake blowing on my Gpu.

The 2 front blast air in an the side circulates it once it reaches the top it gets sucked out by the 2 Venoms.

All the fans in my case are controlled by a controller an not every single fan blows at the same RPM.

Cpu never goes over 39C under load, the case temp inside has never gone over 30C so if there's neg air flow i don't feel it.

Any case can have a neg air flow if the fans aren't set up right.
 
Quick picture of my temp but bare in mind the rigs been running since 8.30 this morning.

Been doing the normal things encoding/watching movies and playing games.

http://i.imgur.com/n8zGx.jpg

** Please resize image to no more than 1280px wide before replacing image tags - thanks **
 
You really need 1400-1500rpm to keep things cool?

My 920 @ 3.5GHz idled at 25-28c @ just under 700rpm on all fans. Full load encoding with 2x Handbrakes running was 50-53c @ 950-1050rpm; ambient 21c.

980 @ 3.5GHz runs a little cooler at full load.. 47-50c. Need to overclock it more. :D
 
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