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Fan orientation, am I doing it right? - Page 2

post #11 of 24
Optimal fan orientation is to only have 1 top fan blowing in. preferably the one closest to the front of the case.

you have to try and block off the 2nd fan slots in order to keep air from escaping.

that way the air movement from the heatsink wont be disturbed by the intake force of the 2nd top intake fan.
    
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post #12 of 24
Instead of saying "blowing in" or "blowing out", why not just say "intake" and "exhaust"?
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post #13 of 24
Meh. To ones own.
 
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post #14 of 24
Warm air rises. So it would only seem logical to have the top fan as exhaust.
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post #15 of 24
Quote:
Originally Posted by i_ame_killer_2 View Post
Warm air rises. So it would only seem logical to have the top fan as exhaust.
Yeah, warm air does rise. However, the air outside is cooler than the air inside the case. So, it also makes sense to set the top fan(s) as intake(s) in order to send cooler air into the case which, in turn, gets fed into the CPU cooler. In addition, any positive pressure that this creates forces extra air out, which means the warmer air inside is not only being pulled out by any exhaust fans, but it's also being pushed out by the extra intakes at the top.

Not only that, but I've seen many reports over the past several months by people who decided to try their top fan(s) as intake just to see what happens, and they ended up with lower temperatures.
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It's a computer!
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post #16 of 24
Thread Starter 
Quote:
Originally Posted by Kick View Post
Optimal fan orientation is to only have 1 top fan blowing in. preferably the one closest to the front of the case.

you have to try and block off the 2nd fan slots in order to keep air from escaping.

that way the air movement from the heatsink wont be disturbed by the intake force of the 2nd top intake fan.
Thanks, I tried this and noticed that my temps went down around 1-2deg.

However, I just discovered something else. My GPU temps go up by a whopping 5 degrees. I'm being trolled thermodynamically.
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post #17 of 24
I'm still unsure about what to do on my rig
I have a top rad exhausting with 3 fans, side fan intake, 2x front fans intake and I keep being undecided about whether having back fan in/out or just off...
Later on I flipped the back fan into an intake, temps dropped by ~5C...
Then at some point I set it to off... temp drops by 5 more degrees.
I'm just confused lol
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post #18 of 24
Thread Starter 
I think I've got it figured out.

Since my PCI slots have vents in them, hot air from the GPU was coming back into my case, which then was sucked back into said GPU. The additional fan at top puts a positive pressure in the case, and prevents the air from coming back in.
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post #19 of 24
Quote:
Originally Posted by Demented View Post
If you'd like to see if you can get a bit cooler, try flipping the top fans to exhaust.

I fully agree with this post ... ... I was always taught that hot air rises ... even in a small pc that still applies ...

You will have to large intakes pushing all the hot air in the tower 2 the bottom where u have no exhaust fans ... also ... the only exhaust fan u have will be disrupted by the 2 intakes at the top probably cutting it's effectiveness in half ...


Smooth flowing airflow is more effective than blasting random amounts of air every-which-way ...


Just my 2c,
If I am wrong ... then I am learning as well ... hehe
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post #20 of 24
Whao ... in the time I typed my post ... so many had beat me 2 it ... epic fail on my typing skills ... LMAO ...
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