Assuming a tower case, which is going to keep all the hardware cooler,
the case open on both sides or a sealed case with a pusher on one end
and a big puller on the other?

Thanks for all input.

muzician21 <(E-Mail Removed)> wrote:

> Assuming a tower case, which is going to keep all the hardware
> cooler, the case open on both sides or a sealed case with a pusher
> on one end and a big puller on the other?

Neither. There is no more compelling argument IMO for
positive/negative pressure in your case then the argument that you
do not want negative pressure working against your power supply fan.
The other issue, brought up not long ago, pointed out that tunneled
air can do more good than components in an open case with stagnant
air around them. Others might fill you in on the details of that
one. Also, I use a temperature and fan speed monitoring utility.
Knowing what is going on is very useful for getting it right.


--
Interested in making Windows and games obey your verbal commands?
Continuous command recognition (much easier than speech recognition)
can now be enabled using Naturally Speaking and freeware Dragonfly.
See (comp.lang.beta) for discussion.

"muzician21" <(E-Mail Removed)> wrote in message
news:197755c0-98e4-4b95-89f7-(E-Mail Removed)...
> Assuming a tower case, which is going to keep all the hardware cooler,
> the case open on both sides or a sealed case with a pusher on one end
> and a big puller on the other?
>
> Thanks for all input.

Sealed case with fans. Temperature in case will be warmer, but airflow in
sealed case will keep individual components cooler, and THAT is what you
want. -Dave

A closed case with fans will keep the hardware cooler because air is forced through the case instead of relying on convection to keep things cool. My main computer has two exhaust fans and no pusher. I leave the front plastic cover off to reduce restriction of the air flow. My processor is currently running at 32 deg. C and the motherboard is 29 deg. C.

muzician21 wrote:
>
> Assuming a tower case, which is going to keep all the hardware cooler,
> the case open on both sides or a sealed case with a pusher on one end
> and a big puller on the other?
>
> Thanks for all input.

--
Mike Walsh

It depends on the design of the case, including fans and interior layout...

Old airplane engines were air-cooled by airflow over the cylinders that
simply stuck out in the breeze. Later, cowls were put over them to reduce
air drag. Some intelligent people discovered that a cowled engine also
stayed cooler, and that evolved into today's closely cowled engines in
almost all piston engine designs. However, those designs must be
deliberately designed to ensure cooling air to all the cylinders.

Likewise, an open case will likely adequately cool a low-power system.
However, in a higher power system, airflow through the case has to be
engineered to cool the motherboard chips ("Northbridge" and "Southbridge"),
graphics processor (GPU), and hard drives as well as the CPU. If you look
in a higher power system these days, you will find large finned heat sinks
on all these components. Good airflow over all these components is crucial,
and may be enhanced by a closed case with well-placed fans.


"Mike Walsh" <(E-Mail Removed)> wrote...
>
> A closed case with fans will keep the hardware cooler because air is
> forced through the case instead of relying on convection to keep things
> cool. My main computer has two exhaust fans and no pusher. I leave the
> front plastic cover off to reduce restriction of the air flow. My
> processor is currently running at 32 deg. C and the motherboard is 29 deg.
> C.
>
> muzician21 wrote:
>>
>> Assuming a tower case, which is going to keep all the hardware cooler,
>> the case open on both sides or a sealed case with a pusher on one end
>> and a big puller on the other?

JR Weiss wrote:
>
> It depends on the design of the case, including fans and interior
> layout...
>
> Old airplane engines were air-cooled by airflow over the cylinders
> that simply stuck out in the breeze. Later, cowls were put over
> them to reduce air drag. Some intelligent people discovered that
> a cowled engine also stayed cooler, and that evolved into today's
> closely cowled engines in almost all piston engine designs.
> However, those designs must be deliberately designed to ensure
> cooling air to all the cylinders.
>
> Likewise, an open case will likely adequately cool a low-power
> system. However, in a higher power system, airflow through the
> case has to be engineered to cool the motherboard chips
> ("Northbridge" and "Southbridge"), graphics processor (GPU), and
> hard drives as well as the CPU. If you look in a higher power
> system these days, you will find large finned heat sinks on all
> these components. Good airflow over all these components is
> crucial, and may be enhanced by a closed case with well-placed
> fans.

Please do not top-post. Your answer belongs after (or intermixed
with) the quoted material to which you reply, after snipping all
irrelevant material. See the following links:

<http://www.catb.org/~esr/faqs/smart-questions.html>
<http://www.caliburn.nl/topposting.html>
<http://www.netmeister.org/news/learn2quote.html>
<http://cfaj.freeshell.org/google/> (taming google)
<http://members.fortunecity.com/nnqweb/> (newusers)

--
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[page]: <http://cbfalconer.home.att.net>
Try the download section.

"CBFalconer" <(E-Mail Removed)> wrote...
>
> Please do not top-post. Your answer belongs after (or intermixed
> with) the quoted material to which you reply, after snipping all
> irrelevant material. See the following links:

Please do not tell me how to post. If someone top-posts, I will continue to
respond in the same way so there is less confusion in the thread.

Please do not try to play "net cop." If you don't like the way I post, then
killfile me.

Thu, 9 Apr 2009 04:55:13 -0000: written by "JR Weiss"
<(E-Mail Removed)>:

>"CBFalconer" <(E-Mail Removed)> wrote...
>>
>> Please do not top-post. Your answer belongs after (or intermixed
>> with) the quoted material to which you reply, after snipping all
>> irrelevant material. See the following links:
>
>Please do not tell me how to post. If someone top-posts, I will continue to
>respond in the same way so there is less confusion in the thread.
>
>Please do not try to play "net cop." If you don't like the way I post, then
>killfile me.

So long-established Usenet convention is irrelevant to you?

Quit being so easily offended and calling people names because someone
took the time to point you in the right direction.

<blank nym> wrote...
>>>
>>> Please do not top-post. Your answer belongs after (or intermixed
>>> with) the quoted material to which you reply, after snipping all
>>> irrelevant material. See the following links:
>>
>>Please do not tell me how to post. If someone top-posts, I will continue
>>to
>>respond in the same way so there is less confusion in the thread.
>>
>>Please do not try to play "net cop." If you don't like the way I post,
>>then
>>killfile me.
>
> So long-established Usenet convention is irrelevant to you?
>
> Quit being so easily offended and calling people names because someone
> took the time to point you in the right direction.

I'm not offended. I am fully aware that top-posting is as long-established
a convention as is bottom-posting. Both conventions predate the public
Internet by several years. Neither one has been officially established as
"proper" or "improper," except in the minds of a few self-appointed net
cops.

I started my first BBS in 1989, in a Desqview window with a 9600 bps modem.
Didn't find Windoze until '92 or the Internet 'til '93...

On-topic part: Didn't need any fancy cooling for the Z80 machine with dual
5" SSSD floppies, or the 286 machine with EMS expansion board. Desqview
"rocked" with 2 MB RAM (but installing all those DIPP chips was a pain)!


"John" <(E-Mail Removed)> wrote...
I agree . . . I've been using Usenet for 13 years and top posting use to be
the norm. Before that I used the BBS with DOS based mail readers and you had
to wait till the next day to get a reply. Then Netscape Navigator came out
and the
Internet killed the BBS's


On Thu, 9 Apr 2009 14:15:22 -0000, "JR Weiss" <(E-Mail Removed)> wrote:

>I'm not offended. I am fully aware that top-posting is as long-established
>a convention as is bottom-posting. Both conventions predate the public
>Internet by several years. . .