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Case fan airflow question
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TheFear
Junior Member
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19. July 2006 @ 13:19 |
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Hey everybody.
I want to help my dad create good airflow inside the case of his computer. The problem is his case orientation is different from most cases. The only case fan slots are two 80mm fan slots lined horzontally under the power supply. There are no fan slots in the front.
There is one fan in the power supply blowing air outwards.
Now if I am to get two 80mm fans for those slots in the back, which direction should they blow?
I know that generally fans at the back of the case should blow out, but then there would be a total of three fans blowing outwards at the back, with no fans blowing in, and I'm not sure if that's okay...
Any help is appreciated.
Thanks.
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TheFear
Junior Member
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19. July 2006 @ 13:23 |
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Whoops, I made a mistake in the post up there.
The 80mm fan slots are lined vertically under the power supply, not horizontally.
Thanks.
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shawn_nee
Junior Member
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19. July 2006 @ 15:43 |
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I don't know if you want the 2 80mm fans blowing in if they are under the ps fan blowing out. You will get some of the exaust back in the case. I have had a case that i experimented with like this, I actually tried putting one fan in, one out, and it increased the case temp. I tried both in, and it increased the temp in the case. Having bout flow out was the best for temp in the case. I even riged one fan in the front of the case by creating a bracket to hold it in place and pulling air in and the fan on the back blowing it out. It didnt make to much of a diff in the case temp vs haveing both blow out on the back.
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TheFear
Junior Member
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20. July 2006 @ 07:42 |
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Well this questions if I should install fans there at all. If there are three fans blowing outwards at the back, and no fans blowing in, it would cause a depressurized vaccum inside the case, but I'm not sure if that is good or bad. Is it better to have a positive pressure, or a negative pressure inside the case?
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shawn_nee
Junior Member
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20. July 2006 @ 08:27 |
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You should atleast have one fan there. I have my current rig set up with only 1 case fan and it is blowing out and the cpu sits around 40 degrees, and there are no fans blowing air in right now.
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Senior Member
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20. July 2006 @ 11:47 |
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do u really need a cooler pc r u having heat problems? if not i would leave it as it is
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shawn_nee
Junior Member
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20. July 2006 @ 12:01 |
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The less heat you have the faster you can crank it up. So a cooler cpu can overclock easier, and a cooler video card can be overclocked easier. The hotter your case is the faster you can burn out the whole tower. So yes you want a cooler case just to keep your system running faster.
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TheFear
Junior Member
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20. July 2006 @ 12:05 |
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There isn't exactly a heat problem, but I just need to help it move some hot air instead of it being trapped within the case. The cooler, the better. And also, because there's a sale, where a quiet & powerful 80mm case fan is just $1.99 :)
And also, the CPU temperature of that computer is to be questioned...
The processor is a Pentium 4 at 2.4GHz. The idle temperature is 53 degrees celsius. I do not know the exact model # of this processor, so I do not know if this 53-Celsius temperature is normal...
I don't know if 53C is normal, because I have another (older) computer which is also a Pentium 4 at 2.4GHz, and the idle temperature is 30-Celsius.
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Senior Member
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20. July 2006 @ 12:06 |
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i dnt think his dad knows what the word overclocking is
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Senior Member
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20. July 2006 @ 12:09 |
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wow dude 53c thats messed up!! unless its a pentium 4 prescott then its ok i had one b4 this one that with liquid cooling was runing at 63c without overclocking!
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shawn_nee
Junior Member
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20. July 2006 @ 12:10 |
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1 or two fans should be good to have them blowing out. If they are that cheap and a good brand buy a few of them. I stock up on them, for when I rebuild a friends rig or build one from scratch for a client. I normally like to have 2-3 fans in them for others since I'm not there to moniter them and the more fans the longer before they call me to fix something.
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TheFear
Junior Member
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20. July 2006 @ 15:22 |
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Okay then, I'll go get a few fans (since they're so cheap) and install one of them in the computer.
Thanks for all the help!
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shawn_nee
Junior Member
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20. July 2006 @ 15:25 |
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No problem. If you have a thermometure (sp?) you can check the inside temp, or if your mobo has one built in check the case temp and see what the fan does for it. If you buy more then one, hook up the second fan, and see if it improves the inside temp.
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