Case Fan's

[Space Cowboy]

Probably a stupid question but I've always wondered.

I am waiting on a new power supply for my new system and got 4 coolermaster fan's today and would like to install them.

So here is the stupid question: How can I tell which way to install them? I'm thinking the front fan's should intake and the rear fan's blow out. I don't know which way the power supply blows but it is a Antec Neopower 480watt.

Can you tell just by looking at a fan which way is which?

Thanks

 

[peleejosh]

the fan usualy blows out the side with the sticker on it. But not always.

 

[Zepper]

Yes, lower front fan(s) should be intake, upper rear fan(s) should be exhaust. All PSU fans are exhaust.
.bh.

 

[Gbaby1008]

front-intake back-exhaust -side-intake top-exaust. The fan should have an arrow on it pointing which way. It usually blows the side the grill is.

 

[Space Cowboy]

Thanks Allot
I looked for a arrow but am unable to find any. They are brand new coolermaster fan's. I put them in with the logo facing out in the back and the logo facing in on the front.

Thanks Again
Space Cowboy

 

[kextyn]

If you look at the fan blades you can tell which way they blow the air. If you spin it the wrong way the blades will look bowed out towards the way its spinning. It should look like its scooping the air. So if the fan blade looks like this ( it should spin to the right. When it is spinning the correct way it will really hurt your finger on one side and not the other. The side that looks like it would cut into your finger is the side its pulling air from. I don't even know if I would understand what I just wrote but if you look at it logically I'm sure you can figure it out.

 

[imported_Kensai]

Usually it' blows out the direction of the label, and as they pointed out, there's also an arrow on the side.

 

[AlabamaCajun]

What you want is more exhaust than intake if possible with the exhaust fans near the main heat sources (Cpu, Vid and North bridge). I use the front intake fan to stir the air on the mobo chips and ram, a side intake does good for this also. If you have more than 2 harddrives, you'll want an extra fan on the HDs and either top blowhole or 2 rear exhaust fans (1 huge 120mm will work also).
Go the extra mile:
1) if you have Lantec Nexus Fan control and tempsensor, place one of the probes on several parts and heatsinks to find hot spots.
2) Attach plastic streamers in several places around your mobo (keep them away from fans) use a case window or sheet of plexiglass to observe the streamers.

With this technique I was able to determine I needed more airflow around the DDRs and a Fan on the North Bridge (45C just surfing the net).
With 90mm and 80mm PSU exhaust fans and 1 front intake fan angled slightly up toward the center of the mobo and the 40mm on the NBridge. I'm seeing 30's on all the major components and a few low 40's gaming in OC mode. My front intake is on a manual control that I use while gaming the rest are on autotemp.

 

[snaxo]

Ok I am just considering adding a top fan in my Wavemaster case (removing the top access ports) - so I'm correct in understanding that this should be an exhaust fan and not an intake fan then?

Damian

 

[Zepper]

The arrows are usually molded into the plastic on the outside of the frame - sometimes hard to see and there are usually two arrows perpendicular to each other: one shows direction of rotation, and the other shows direction of air flow. Any fan could be either intake or exhaust - just depends on the way you mount it to the case...

.bh.

Here, have a :beer: ! My Berserker is arriving today...