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| Author |
Message |
ball
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ATX Cases
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Jul 25 06:23 UTC 2006 |
In ATX and microATX cases, is the power supply fan supposed
to suck air from inside the case (near the microprocessor)
and blow it out of the back, drawing air in through vents
elsewhere in the case (assume there are no additional fans)?
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| 10 responses total. |
gull
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response 1 of 10:
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Jul 25 18:16 UTC 2006 |
Yes. At least in ATX cases that's true; I haven't built a microATX
system yet. I don't think I've seen a computer case design where the
power supply wasn't the exit point.
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ball
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response 2 of 10:
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Jul 25 18:51 UTC 2006 |
Thanks gull. I'm thinking about how to achieve a nice
balanced airflow inside some ATX and mATX cases that I will
be using. There's a hole for a 60mm fan next to the PSU.
Without a fan there I suppose warm air that's just come out
of the PSU can easily get sucked back in. If I add an exaust
fan there, then I may even get a down-draught in the chimney
and cooler air coming in the side or front of the case.
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ball
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response 3 of 10:
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Jul 25 18:56 UTC 2006 |
Who knows, perhaps I'll even get a breeze past the disk
drives! ;-)
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gull
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response 4 of 10:
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Jul 26 05:01 UTC 2006 |
Probably. The idea is to create a slight negative pressure inside the
case, so air is drawn in through the front and side vents. I've seen
some machines where this was carefully engineered (the IBM PS/2 series,
for example) but in most cases they just throw a couple of good-sized
fans in the back of the case and hope. ;)
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ball
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response 5 of 10:
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Jul 26 06:24 UTC 2006 |
I was actually thinking of creating a very slight positive
pressure (assuming I could muster that much control) and put
a simple filter over the intake to reduce the ingress of
dust (bunnies).
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gull
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response 6 of 10:
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Jul 27 17:40 UTC 2006 |
I've seen systems that did that by having the sole intake in the front
panel, and putting a filter on that. It's common on industrial PCs.
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ball
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response 7 of 10:
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Jul 27 23:34 UTC 2006 |
Sounds like I'm barking up the right tree then.
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arthurp
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response 8 of 10:
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Oct 1 06:41 UTC 2006 |
If there is a sole intake it can be very difficult to get circulation
past critical items such as disk drives. Be careful and make a real
effort to have temperature sensors on critical components that you can
monitor and log in software. At least for the prototype.
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ball
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response 9 of 10:
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Apr 2 03:03 UTC 2016 |
My new PC is built in a SilverStone SG13 mITX case,
which is about the size of a shoe box. I like that it takes
a standard ATX PSU and a 120mm intake fan. I dislike that my
3.5" hard disk drive must be mounted upside down.
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ball
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response 10 of 10:
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Oct 5 20:53 UTC 2018 |
This week I recycled my 32-bit PC, which was built in an
Antec TX640B tower case. I have to wait until Tuesday to
recycle my 64-bit test rigs.
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