subject:"Computer case"

Re: [OT] Re: Computer case

2012-06-07 Thread Ralf Mardorf

On Tue, 2012-06-05 at 20:12 -0400, Doug wrote:
 It occurs to me that you may be asking the wrong question. The noise
 from a computer comes almost entirely from fans. One fan is in the
 power supply, a fairly stoochy fan is on the CPU, and there may or may not
 be a fan at the front of the case. You can select the CPU fan, and you can
 select a power supply, and the remaining fan (if any) in the case, you
 could replace with a quieter one if you need to.

I'm already using a computer with a large fan for the PSU and there only
is a second fan for the CPU. The annoying noise I get is from the HDDs
and the case's sidewalls.

- Ralf




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Re: [OT] Re: Computer case

2012-06-05 Thread istimsak abdulbasir

Hi :)

any recommendation for a computer case that can be used with Debian
stable ;)?
Ok, it's slightly OT, I'm sorry for that. However, experiences with
cases regarding to noise (and heat), accuracy of fit for cards are
interesting for me, others might be interested in space (and vertical
stability).

Regards,
Ralf

I have a Soprano Thermaltake Computer case with Debian Squeeze installed.
This baby got back-bone. Very quite, no vibrations, no overheating. Should
work most Asus brand motherboards.
https://www.google.com/search?q=soprano+pc+casehl=enprmd=imvnstbm=ischtbo=usource=univsa=Xei=nIrOT86DGOTA6AGI5P2NDAved=0CKgBELAEbiw=1024bih=610

Also what type of system board are you planning on using?

On Sun, Jun 3, 2012 at 12:08 PM, Camaleón noela...@gmail.com wrote:

On Sat, 02 Jun 2012 08:45:01 +0200, Ralf Mardorf wrote:

Hi Camaleón,

the cases I own are around 14 high. I could place any case = 26 high.
I like the relatively unobtrusive design of CHIEFTEC, but I don't trust
the sidewall catch.
Since better cases seems to be expensive, I'm googleing for 19 wide
cases at the moment. Most of my music gear is 19 too. I placed the gear
on shelfs, but I tend to switch to a 19 cabinet, to get rid of the wide
and lengthy shelfs. A tower could be 26 high, if I would get rid of
the shelfs.
The only issue, a 19 or a new tower computer case + a 19 cabinet is
above my financial scope.

So you look for a racked cabinet? 19 chasis are quite huge and lengthy
but if have the required space, they're perfect when it comes to put your
hands on them (adding cards, removing cables, changing the power supply
is a child's play...) :-)

Also, remember that depending on the racked height (=2U) you will have
to search for low-profile/half-height PCI cards.

If a huge case is nearly empty, doesn't it tend to be an acoustic
resonator?

Mmmm... I can't tell (the rack room I manage is so noisy that I can
barely hear anything but the noise coming from the dual power supplies :-
P) but there are kits in the market aimed to solve the unwanted sound
which usually include foam pieces for the covers and silent-blocks to
avoid vibrations coming for the moveable components (hard disks, fan
screews, etc...).

Greetings,

--
Camaleón

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Re: [OT] Re: Computer case

2012-06-05 Thread Doug


On 06/05/2012 06:44 PM, istimsak abdulbasir wrote:

Hi :)

any recommendation for a computer case that can be used with Debian
stable ;)?
Ok, it's slightly OT, I'm sorry for that. However, experiences with
cases regarding to noise (and heat), accuracy of fit for cards are
interesting for me, others might be interested in space (and vertical
stability).

Regards,
Ralf

It occurs to me that you may be asking the wrong question. The noise
from a computer comes almost entirely from fans. One fan is in the
power supply, a fairly stoochy fan is on the CPU, and there may or may not
be a fan at the front of the case. You can select the CPU fan, and you can
select a power supply, and the remaining fan (if any) in the case, you
could replace with a quieter one if you need to.

--doug


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Re: Re (2): Computer case

2012-06-03 Thread Stan Hoeppner

On 6/2/2012 4:42 AM, Ralf Mardorf wrote:
 On Sat, 2012-06-02 at 04:04 -0500, Stan Hoeppner wrote:
 The mounting holes are the same dimensions.  But the server chassis must
 be designed for dog ear mounting.  Many/most today are designed for
 slide rail use, meaning the dog ears alone aren't strong enough to
 support the chassis.  Most generic 4U and larger chassis can be dog ear
 mounted just fine.  2U/3U units will tend to bend/sag where ears attach
 to the chassis, and nobody should ever consider dog ear mounting a 1U
 chassis.
 
 Around 4U is the wide of a tower. 

Yes.  4U = 1.75 x 4 = 7 inches

 I guess the mobo and cards only fit to
 4U high, even 3U might be to small.

4U chassis will accept full height cards, and those vid cards with big
heat pipe coolers.  4U chassis are the cheapest RM units by bar.  A 4U
would best fit your needs and cost target.  Here's a good one for the $$

http://www.newegg.com/Product/Product.aspx?Item=N82E16811219030
http://www.norcotek.com/RPC-450B.php

Note the cheapest RM cases, WITHOUT PSUs, are the same price as a
mid/high end mini towers w/PSU.

 Perhaps a 19 case idea isn't good due to the cooling 

That case above has excellent cooling.  However, if your audio rack has
a back panel you cannot use an RM case, as the hot exhaust air would get
trapped inside the cabinet and overheat the PC.

 OTOH just small
 sidewalls (equivalent to a tower's base and top) are surrounded by the
 cabinet/rack walls. Above and below the 19 computer case I could keep
 many units empty, which also might be needed regarding to shielding
 issues, when mounted to an audio cabinet/rack.

This will not work.  The audio rack must have an open front and open
back.  If it has a back panel, simply remove it.  If you'd rather not
remove it permanently, simply remove it, cut out a rectangle the size of
the RM chassis with a Rotozip, Fein multitool, jigsaw, etc, so the
exhaust air can escape.  If the panel is cheap Masonite (pressed board)
you can cut it with a utility knife.  If none of this is possible, don't
buy a rackmount case.

-- 
Stan


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Re: [OT] Re: Computer case

2012-06-03 Thread Camaleón

On Sat, 02 Jun 2012 08:45:01 +0200, Ralf Mardorf wrote:

 Hi Camaleón,
 
 the cases I own are around 14 high. I could place any case = 26 high.
 I like the relatively unobtrusive design of CHIEFTEC, but I don't trust
 the sidewall catch.
 Since better cases seems to be expensive, I'm googleing for 19 wide
 cases at the moment. Most of my music gear is 19 too. I placed the gear
 on shelfs, but I tend to switch to a 19 cabinet, to get rid of the wide
 and lengthy shelfs. A tower could be  26 high, if I would get rid of
 the shelfs.
 The only issue, a 19 or a new tower computer case + a 19 cabinet is
 above my financial scope.

So you look for a racked cabinet? 19 chasis are quite huge and lengthy 
but if have the required space, they're perfect when it comes to put your 
hands on them (adding cards, removing cables, changing the power supply 
is a child's play...) :-)

Also, remember that depending on the racked height (=2U) you will have 
to search for low-profile/half-height PCI cards.

 If a huge case is nearly empty, doesn't it tend to be an acoustic
 resonator?

Mmmm... I can't tell (the rack room I manage is so noisy that I can 
barely hear anything but the noise coming from the dual power supplies :-
P) but there are kits in the market aimed to solve the unwanted sound 
which usually include foam pieces for the covers and silent-blocks to 
avoid vibrations coming for the moveable components (hard disks, fan 
screews, etc...).

Greetings,

-- 
Camaleón


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Re: Re (2): Computer case

2012-06-02 Thread Stan Hoeppner

On 6/1/2012 11:47 AM, pe...@easthope.ca wrote:
 Hello Ralf,
 
 * From: Ralf Mardorf ralf.mard...@alice-dsl.net
 * Date: Fri, 01 Jun 2012 07:03:15 +0200
 ... cases regarding to noise (and heat), accuracy of fit for cards are
 interesting for me, ...
 
 For industrial grade equipment, look at Compact PCI.
 
 http://en.wikipedia.org/wiki/CompactPCI
 http://www.compactpci.org/
 http://en.wikipedia.org/wiki/PICMG

Presenting cPCI in this discussion, or industrial equipment, is simply
wrong on so many levels.

Keep the discussion grounded in reality folks.  He's asking for
information on workstation (desktop/side) PC cases.

Anything in the cPCI/industrial realm will quadruple the price and noise
level, and limit choice of mobos, expansion boards, CPU boards, etc.
Not to mention it's all racked gear.  So he'll need a rack as well.

Again, merely mentioning this in this thread is silly.  There are fora
for discussing such hardware.  This thread was OT to start, now it's off
the deep end of OT.

-- 
Stan


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Re: [OT] Re: Computer case

2012-06-02 Thread Ralf Mardorf

Hi Camaleón,

the cases I own are around 14 high. I could place any case = 26 high.
I like the relatively unobtrusive design of CHIEFTEC, but I don't trust
the sidewall catch.
Since better cases seems to be expensive, I'm googleing for 19 wide
cases at the moment. Most of my music gear is 19 too. I placed the gear
on shelfs, but I tend to switch to a 19 cabinet, to get rid of the wide
and lengthy shelfs. A tower could be  26 high, if I would get rid of
the shelfs.
The only issue, a 19 or a new tower computer case + a 19 cabinet is
above my financial scope.

If a huge case is nearly empty, doesn't it tend to be an acoustic
resonator?

Regards,
Ralf


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