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How to decide on a case for air cooling (warning - pics) - Page 154

post #1531 of 2110
Thread Starter 

@wilsouk

 

You have a high ceiling case. You cannot make a wind tunnel. So a pair of 25mm fans -- 120mm or 140mm -- would be best.

 

Your mid-case fan will work more quietly than a front fan: I believe a front fan would pull air rapidly through those horizontal bars and make noise. But test the two configurations.

 

As for exactly which fans, that is a matter for experimentation. When you have tried a bunch of configurations, then you can tell us.

 

BTW -- I like what you've done so far. Keep it up, and post more pics.

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post #1532 of 2110
Quote:
You have a high ceiling case. You cannot make a wind tunnel. So a pair of 25mm fans -- 120mm or 140mm -- would be best.

Take it you mean the top fans? Was considering blocking out the surplus grating around them to funnel air out of rear.

As I can not make an air tunnel, what are your views of side panels fans?
Quote:
Your mid-case fan will work more quietly than a front fan: I believe a front fan would pull air rapidly through those horizontal bars and make noise. But test the two configurations.

Once I get some foam etc to make mid case fan will let you know!
Quote:
As for exactly which fans, that is a matter for experimentation. When you have tried a bunch of configurations, then you can tell us.

Is there any consenting opinion on how much air they need to shift, I presume front need to be powerful to go front to back, not sure about top and (possibly) side panel. I feel Ultrakaze maybe overkill, especially as they give my hoover a run for its money noise wise....

Cheers
Liam
post #1533 of 2110
Thread Starter 
Quote:
Originally Posted by wilsouk View Post

Quote:
You have a high ceiling case. You cannot make a wind tunnel. So a pair of 25mm fans -- 120mm or 140mm -- would be best.

Take it you mean the top fans? Was considering blocking out the surplus grating around them to funnel air out of rear.

As I can not make an air tunnel, what are your views of side panels fans?
Quote:
Your mid-case fan will work more quietly than a front fan: I believe a front fan would pull air rapidly through those horizontal bars and make noise. But test the two configurations.

Once I get some foam etc to make mid case fan will let you know!
Quote:
As for exactly which fans, that is a matter for experimentation. When you have tried a bunch of configurations, then you can tell us.

Is there any consenting opinion on how much air they need to shift, I presume front need to be powerful to go front to back, not sure about top and (possibly) side panel. I feel Ultrakaze maybe overkill, especially as they give my hoover a run for its money noise wise....

Cheers
Liam


Top intake fans. Two 25mm will do. 38mm fans reduce the clearance, so you lose the benefit of having both fans add to the general airflow, not interfering with the heatsink's airflow. Unless you put a partition over the heatsink to in effect lower the ceiling. Then a single 38mm fan would tend to produce a wind tunnel. Instead, two 140x25mm top intake fans would add to the airflow fairly quietly.

 

No consensus on the amount of air. It's whatever noise you find tolerable.

 

All the UK's are the same fan, but set to different speeds. I prefer the UK2K, since it is not pushing its envelope. Since you have UK3K's, you might consider getting a nice fat resistor and putting it in the adapter that came with the fan.

 

You should always lubricate sleeve bearing fans before you put them into service. I got an extra 15% speed when I lubricated my UK1K -- it was dry in the well.

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post #1534 of 2110
Hey Guys biggrin.gif

OK i went against all the rules on airflow and now i'm regretting it frown.gif

i did this instead
442
200mm at top exhaust
140mm side panel intake
120mm front intake (x3)
120mm push pull on cooler (x2)
120mm on back exhaust
it looks like this
338

so my problem is my temps are now 50c on idle frown.gif and with my old setup it was 40c idle
this the old setup
LL

so now i don't know what to do Please help me guys biggrin.gif
PS i only have enough thermal paste to re apply about 3 times frown.gif i'm running low since i'm not smart and used most of it all at once XD i thought i wasn't using enough so i added more thermal paste but that didn't help.

and does it help that its 95 degrees in my house on my old setup it was winter so i don't know
air flow is not my specialty no more XD
    
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post #1535 of 2110
Warning: Spoiler! (Click to show)
Quote:
Originally Posted by SuperDeo View Post

Hey Guys biggrin.gif
OK i went against all the rules on airflow and now i'm regretting it frown.gif
i did this instead
442
200mm at top exhaust
140mm side panel intake
120mm front intake (x3)
120mm push pull on cooler (x2)
120mm on back exhaust
it looks like this
338
so my problem is my temps are now 50c on idle frown.gif and with my old setup it was 40c idle
this the old setup
LL
so now i don't know what to do Please help me guys biggrin.gif
PS i only have enough thermal paste to re apply about 3 times frown.gif i'm running low since i'm not smart and used most of it all at once XD i thought i wasn't using enough so i added more thermal paste but that didn't help.
and does it help that its 95 degrees in my house on my old setup it was winter so i don't know
air flow is not my specialty no more XD

50c idle???
What cpu are you running? Sounds like a bad mount. Even my 4ghz P4 Prescott idled at 40c lol
post #1536 of 2110
your roof mounted 200 is killing the CPU cooler flow.
turn it off and retest.

airdeano
post #1537 of 2110
Thread Starter 
Quote:
Originally Posted by airdeano View Post

your roof mounted 200 is killing the CPU cooler flow.
turn it off and retest.

airdeano

Agree. Test it that way. Then put some paper over the top so the case has no air going in or out at the top. Test it that way. Don't know if it will make a difference, but we will learn something.

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post #1538 of 2110
Quote:
Originally Posted by ivanlabrie View Post

Warning: Spoiler! (Click to show)
50c idle???
What cpu are you running? Sounds like a bad mount. Even my 4ghz P4 Prescott idled at 40c lol
its a Intel E8400 duo core something like that but with the stock heat sink i was at 70c idle but i would remove it to clean it and never re applied thermal paste i never knew you had to do that XD

Quote:
Originally Posted by airdeano View Post

your roof mounted 200 is killing the CPU cooler flow.
turn it off and retest.
airdeano
Thanks would you recommend a different fan positioning ?
Quote:
Originally Posted by ehume View Post

Agree. Test it that way. Then put some paper over the top so the case has no air going in or out at the top. Test it that way. Don't know if it will make a difference, but we will learn something.
k i got it down to 46c idle i put a paper on top with a heavy box to keep it from moving biggrin.gif and unplugged it

hmm i just want it back to 40c frown.gif and i'm low on thermal paste, i cant do any cutting shop is closed till Monday,

i was thinking this guys placing the cooler to blow air out the top ??? and i also think push pull is at fault here since before i did not have that and both fans are the same using a cpu splinter
    
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post #1539 of 2110
Thread Starter 

Blow air out the top? What you want to do is give your cooler the coolest air you can find. Air from below has already been heated by your motherboard. Try to feed your heatsink something else.

 

Best Thermal Paste I know is Gelid solutions GC Extreme. Get it here, with free shipping. SVC ships fast, too.


Edited by ehume - 7/8/12 at 10:44am
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post #1540 of 2110
Quote:
Originally Posted by ehume View Post

Blow air out the top? What you want to do is give your cooler the coolest air you can find. Air from below has already been heated by you motherboard. Try to feed your heatsink something else.

Best Thermal Paste I know is Gelid solutions GC Extreme. Get it here, with free shipping. SVC ships fast, too.

Thinking...
    
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