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 How to Determine A Case With Good Air Flow?, How many case fan needed?

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mADmAN
post Dec 14 2006, 09:47 PM

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heres sumthin i found awhile back... its an old article in toms hardware (2003) but mebbe this might help to give an idea

http://www.tomshardware.com/2003/04/28/spr...ness/index.html

my HEC 6919 is in there thumbup.gif
TSE-J@1
post Dec 14 2006, 10:00 PM

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QUOTE(mruzian @ Dec 14 2006, 09:39 PM)
go buy fast fast la
b4 it all gone  biggrin.gif
my fren bought one of those last month
black colour  drool.gif
*
damn mad.gif , ur fren bought the black color, hopefully they still got the black color notworthy.gif


QUOTE(DaRkSyThE @ Dec 14 2006, 09:43 PM)
yeah they still have it.
its a nice little cube (not that small  whistling.gif )
*
how u know they still got it? u went to ATE ar today?


QUOTE(mADmAN @ Dec 14 2006, 09:47 PM)
heres sumthin i found awhile back... its an old article in toms hardware (2003) but mebbe this might help to give an idea

http://www.tomshardware.com/2003/04/28/spr...ness/index.html

my HEC 6919 is in there thumbup.gif
*
thanx for the link...will read it now... rclxms.gif

This post has been edited by E-J@1: Dec 14 2006, 10:02 PM
lohwenli
post Mar 8 2007, 08:42 PM

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QUOTE(mars2005 @ Dec 14 2006, 05:46 PM)
Yes, exhaust is more important that intake. -ve internal pressure is desired. You may have only exhaust without intake, or bigger exhasut and a smaller intake.
But never have bigger intake airflow then the exhaust.
*
Yes, get the hot air out of your case and naturally cooler air will come in (there is an explaination for this, but rather lengthy-involves thermodynamic laws). Only put intake fans at hotspots like HDD (which even a single medium speed 80mm or slow speed 120mm will be enough). 2 120mm exhaust fans will be more than sufficient for any system except for the most extreme. Even 2x 80mm exhaust fans is ok for low to moderate systems, for higher systems fans which are powerful enough would be too noisy-get 120mm.

You can always trade off silence for more cooling power with noisier, more powerful fans, but its your call. Bigger fans move more air at lower noise, but casing needs to have mounting for it.

QUOTE(lolhalol @ Dec 14 2006, 06:11 PM)
^good point...lol....
well bro as long as there is no significant blockcage or the airflow , then any case is good. if u wan budget case with good airflow, the icute 0408sl or the aerocool mastige, both retailing bout 230 at lyp... also the airflow also depens on ur cable management . less cable in the path of the airflow , beter airflow..
*
Yup, blockages will reduce airflow AND increase fan noise. Tuck away and tie your cables properly. Rounded cables help a lot.
taxidoor
post Mar 8 2007, 10:16 PM

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i count by this way

okok check the full load then with the case closed up tie.. exp 1 fan at front and 1 at the bak..
mark down the Celcius

then open the left side panel.. if the temp drop more then 5"c mean ur case airflow ar stack..

bsz i doing like this now even i open the side panel there no diff with close up..

noise lvl see how much u want to spend.. spend more then ma more low noise lor

that my way to test out enough fan or not tongue.gif
vey99
post Mar 8 2007, 11:11 PM

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QUOTE(taxidoor @ Mar 8 2007, 10:16 PM)
i count by this way

okok check the full load then with the case closed up tie.. exp 1 fan at front and 1 at the bak..
mark down the Celcius

then open the left side panel.. if the temp drop more then 5"c mean ur case airflow ar stack..

bsz i doing like this now even i open the side panel there no diff with close up..

noise lvl see how much u want to spend.. spend more then ma more low noise lor

that my way to test out enough fan or not tongue.gif
*
Thats a good way. Also try to disable the intake fan, sometimes you may notice no temps change, then can cut down another fan in the pursuit of silence
fuzagi
post Mar 9 2007, 12:56 AM

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i think its a must to have at least intake and exhaust with 8cm fan at least.

btw ive jus added a 12cm fan as exhaust. god its powerful! n noisy. now i guess my cpu is cooler n my room is hotter now.
basSist
post Mar 9 2007, 02:11 AM

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at least A intake (8cm/12cm) and a exhaust fan(12cm) are good enough. take care of the cables wires management in ur casing too.

optional:
a side intake fan just beside the GPU or CPU hsf.
a top exhaust fan
a down intake fan
Zyntherius
post Mar 9 2007, 10:37 AM

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QUOTE(DaRkSyThE @ Dec 14 2006, 09:43 PM)
yeah they still have it.
its a nice little cube (not that small  whistling.gif )
*
How much will that case cost? any idea?
kitman
post Mar 9 2007, 10:45 AM

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good airflow

- silent 12cm fan in front
- silent 12cm fan at the back above the io panel
- air vent with adjustable funnel (if no funnel can make your own from mineral water bottle tongue.gif) on the side panel near cpu
- air vent at pci/pcie area
- air vent on top of the case is optional
- make sure the hard disk drives are located near the front fan to cool them

air filter for fans to minimize dust
Pepperboy
post Mar 9 2007, 08:18 PM

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I read some AMD article stating that intake fans don't really help that much... and another site did some tests and found out the best combination was exhaust fans + top blowhole fan...

And like kitman said above, air vent with funnel near the processor and an air vent below the graphics card bracket should help reduce component temperatures further still... wink.gif
SUSAllnGap
post Mar 9 2007, 10:36 PM

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errr...i'm constructing a fan free solution for my CPU heatsink......there are only intake and exhaust fans but there are no CPU fan......hope it'll work fine as my proc is a barton running at 1.92Vcore.....



anyway, for a good airflow casing, first of all you need to identify which hardware in your PC is hot and does it require high airflow or not high airflow, direction of airflow(closely related to heatsink orientation) and how much airflow is needed...

* hotspot
* direction of airflow
* amount of airflow


the most common design flaw is the normal ATX version which the PSU is directly above the motherboard, as that location is probably the best spot for the exhaust to be located.....hence, adding a top fan will help, or by using a strong exhaust through the rear will help also.
lohwenli
post Mar 9 2007, 11:15 PM

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1.92Vcore?? That barton is headed for the grave the moment it overheats. 1.82v also considered dangerous already unless cooling is very good.
kitman
post Mar 10 2007, 12:12 AM

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all you need is really silent 12cm fans. if it's a home theater setup, you'll hardly notice it. affordable ones so far coolermaster led silent fan. they cost about rm30 a piece. i'm having barton for my ht and using these fans plus the low speed gigabyte socket a hsf. you can check these up to see if acceptable but a oc barton is quite hot so a fanless solution might not be viable. if it's just for ht you can consider running it at default speed and bring down the power & heat - it's speedy enough for ht without oc

This post has been edited by kitman: Mar 10 2007, 12:13 AM
Pepperboy
post Mar 10 2007, 01:53 AM

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Best way actually is to experiment urself... I found out adding a 2nd exhaust fan helped lower my GC temp by about 4 degrees!
davidhomestudio
post Mar 11 2007, 04:44 AM

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Use 25cm Sidepanel fan... at the sidepanel as exhaust and the front n back as intake.. cut a 12" fan hole at the top of the case... then exhaust it... your rig will be cool enough...but if the intake is hot air eg: no air-cond room. then put your com near the window and the 25cm exhaust facing the window... it will be jus nice... icon_rolleyes.gif

air-cond room- use a paip like the one we use for our washing mechine or something like that...put at the air-cond out put. then put it inside the case.

remember- hot air will always go upward; cold air below the hot air.

hope tis help... brows.gif

Attached Image
25cm casing fan
kitman
post Mar 11 2007, 09:23 AM

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QUOTE(davidhomestudio @ Mar 11 2007, 04:44 AM)
Use 25cm Sidepanel fan... at the sidepanel as exhaust and the front n back as intake.. cut a 12" fan hole at the top of the case... then exhaust it... your rig will be cool enough...but if the intake is hot air eg: no air-cond room. then put your com near the window and the 25cm exhaust facing the window... it will be jus nice...  icon_rolleyes.gif

air-cond room- use a paip like the one we use for our washing mechine or something like that...put at the air-cond out put. then put it inside the case.

remember- hot air will always go upward; cold air below the hot air. 

hope tis help...  brows.gif

Attached Image
25cm casing fan
*
wow duct in aircon - abit extreme notworthy.gif thumbup.gif
lohwenli
post Mar 11 2007, 10:36 AM

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QUOTE(davidhomestudio @ Mar 11 2007, 04:44 AM)
Use 25cm Sidepanel fan... at the sidepanel as exhaust and the front n back as intake.. cut a 12" fan hole at the top of the case... then exhaust it... your rig will be cool enough...but if the intake is hot air eg: no air-cond room. then put your com near the window and the 25cm exhaust facing the window... it will be jus nice...  icon_rolleyes.gif

air-cond room- use a paip like the one we use for our washing mechine or something like that...put at the air-cond out put. then put it inside the case.

remember- hot air will always go upward; cold air below the hot air. 

hope tis help...  brows.gif

Attached Image
25cm casing fan
*
Yeah, someone posted that (air-con idea)in the forum somewhere; even got someone put his laptop in a freezer to cool it because fan konked out. Fan's bigger than 120mm damn hard to find le..that 25cm I've only seen in some iCute casings (or was it Power logic?). Must take care properly; don't think can find replacements.

Put at the window? Make sure don't rain and got stong wind...

This post has been edited by lohwenli: Mar 11 2007, 10:37 AM
kitman
post Mar 11 2007, 09:45 PM

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make sure no sun in the morning or evening to cook your pc when you place it at the window smile.gif
jy14
post Mar 12 2007, 01:29 AM

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I agree with the idea of adding top exhaust but only applicable to high-end like the Antec P180. The top exhaust really helps alot. Best solution still put a strong fan to suck out more hot air, then the CPU area will be cooler.


better if you add another fan which can suck hot air from the southbridge and VGA, fit it to the PCI slots, preferbly just below the Graphic card. It'll cool the bottom part of the casing.


1 way which I read once saying if you wanna know how good your case airflow, just run the fans with the PSU inside,no mobo or anything else, then light some cigarates, or burns a small pc of paper and let the smoke be suck in by the front intake. With a transparent side panel, you should notice how the smoke moves inside until it exits the casing and see if the case traps any of those smoke and those r the area that will be warmer.
lohwenli
post Mar 12 2007, 02:57 AM

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QUOTE(kitman @ Mar 11 2007, 09:45 PM)
make sure no sun in the morning or evening to cook your pc when you place it at the window smile.gif
*
Make no mistake, expose to sunlight may just cancel out whatever advantages you get from a direct intake. Especially for dark coloured casings they will get pretty hot.

QUOTE(jy14 @ Mar 12 2007, 01:29 AM)
I agree with the idea of adding top exhaust but only applicable to high-end like the Antec P180. The top exhaust really helps alot. Best solution still put a strong fan to suck out more hot air, then the CPU area will be cooler.
better if you add another fan which can suck hot air from the southbridge and VGA, fit it to the PCI slots, preferbly just below the Graphic card. It'll cool the bottom part of the casing.
1 way which I read once saying if you wanna know how good your case airflow, just run the fans with the PSU inside,no mobo or anything else, then light some cigarates, or burns a small pc of paper and let the smoke be suck in by the front intake. With a transparent side panel, you should notice how the smoke moves inside until it exits the casing and see if the case traps any of those smoke and those r the area that will be warmer.
*
read this article (especially how he tests it out at the end)
http://www.dansdata.com/hx45fan.htm

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