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Properly cooling a W2100z...
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Dave Littell
*nix forums addict


Joined: 08 Apr 2005
Posts: 53

PostPosted: Fri Jun 16, 2006 11:03 pm    Post subject: Re: Properly cooling a W2100z... Reply with quote
Bill Waddington wrote:
Quote:

How old is your 'Z? I received a W1100Z back in mid-05 that sounded
like it was ready for take-off. From my notes back then:

use latest BIOS, set to cooling to "normal" not "aggressive"

Interesting - did you ever notice the aggressive setting doing
anything differently than the normal setting?

Quote:
replace CPU and chassis fans (Sun FRU #s):
CPU: F310-0020 (?)
Chassis: F370-7716

These were warranty replacements from Sun.


Mine is from March 2005 - one of the very last eBay machines. The
machine ultimately faulted on the case fan - a BIOS upgrade and a
new fan later, things were OK. At least until the BIOS starting
flagging 3.3V AUX over-voltage events. Sun replaced the power
supply (now I'm glad I went through the Gauntlet of Agony to buy
support from Sun!) along with a BIOS upgrade and I'm back to the
maelstrom, but the processors are no cooler.

Quote:
The fan swap made a big difference. IIRC you couldn't put in just any
properly-sized quiet fan because the BIOS fan speed detection would
trip and shut down the machine if the officially sanctioned fan wasn't
used.

I see that you have already gone the BIOS route. Perhaps the chassis
and CPU fans described above would fit your W2100Z. If your box is
new enough you may already have the "quiet" fans installed :(


It looks like the newest BIOS (B5S0, I think) has options to disable
the shutdown if a fan stops. This may allow me to replace all the
fans with quieter fans that run flat-out. Hence the Sharkoon
question... ;-)


Thanks,
Dave
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Dave Littell
*nix forums addict


Joined: 08 Apr 2005
Posts: 53

PostPosted: Fri Jun 16, 2006 10:19 pm    Post subject: Re: Properly cooling a W2100z... Reply with quote
Tao Chen wrote:
Quote:

The Opterons generate quite a lot heat and the heatsinks included in
W2100z aren't that good. Unfortunately I didn't find any branded
heatsink that's compatible with the socket board in W2100z.
Therefore, in order to dispel the heat effectively, you need a powerful
120mm fan, which means noise.


Yeah, that was part of the motivation in asking about the Sharkoon
Silent Eagle fans.

Quote:
If you think it's loud now, you haven't experienced the first revision
of BIOS, which drove me nuts. I wasted a lot of time trying to improve
the situation (Oct.2004):
http://www.pbase.com/taochen/w2100z&page=all


It looks like your "cooling towers" are arranged differently than
mine - my fans are on top. Did you try different (quieter) CPU fans?

Quote:
Good thing you run in it in a air-conditioned room. 40-50 Celsius
degree of CPU temperature sounds fine to me.


Here's the weird part: My V40z's and V20z's seem to run much cooler,
even with their (much more) restricted mechanical arrangements.


Thanks,
Dave
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Bill Waddington
*nix forums Guru Wannabe


Joined: 07 Mar 2005
Posts: 178

PostPosted: Fri Jun 16, 2006 2:14 pm    Post subject: Re: Properly cooling a W2100z... Reply with quote
On Wed, 14 Jun 2006 11:07:44 GMT, Dave Littell <littelld@verizon.net>
wrote:

Quote:
(previously posted to comp.sys.sun.hardware, greeted with
crickets...sorry if you've seen this posting before.)

Hi all,

Does anyone know how to properly cool a W2100z, preferably without
any maelstrom sound effects? Each BIOS rev seems to make more
noise, but not actually keep the system cooler. Has anyone tried
different CPU fans or a different case fan?

I've tried the auto+(aggressive, normal) BIOS settings as well as
the "four-step". There seems to be absolutely no difference in how
the fans are handled among any of these options.

How old is your 'Z? I received a W1100Z back in mid-05 that sounded
like it was ready for take-off. From my notes back then:

use latest BIOS, set to cooling to "normal" not "aggressive"
replace CPU and chassis fans (Sun FRU #s):
CPU: F310-0020 (?)
Chassis: F370-7716

These were warranty replacements from Sun.

The fan swap made a big difference. IIRC you couldn't put in just any
properly-sized quiet fan because the BIOS fan speed detection would
trip and shut down the machine if the officially sanctioned fan wasn't
used.

I see that you have already gone the BIOS route. Perhaps the chassis
and CPU fans described above would fit your W2100Z. If your box is
new enough you may already have the "quiet" fans installed :(

Bill
--
William D Waddington
william.waddington@beezmo.com
"Even bugs...are unexpected signposts on
the long road of creativity..." - Ken Burtch
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Ian
*nix forums Guru


Joined: 16 Aug 2005
Posts: 1615

PostPosted: Fri Jun 16, 2006 4:48 am    Post subject: Re: Properly cooling a W2100z... Reply with quote
Dave Littell wrote:
Quote:
(previously posted to comp.sys.sun.hardware, greeted with
crickets...sorry if you've seen this posting before.)

Hi all,

Does anyone know how to properly cool a W2100z, preferably without any
maelstrom sound effects? Each BIOS rev seems to make more noise, but
not actually keep the system cooler. Has anyone tried different CPU
fans or a different case fan?

I've tried the auto+(aggressive, normal) BIOS settings as well as the
"four-step". There seems to be absolutely no difference in how the fans
are handled among any of these options.

I've installed the latest BIOS (B5S0) and all I've noticed is more
noise, not a cooler system (according to the BIOS temp measurements).
The system is very lightly loaded in a very cool home and yet the temps
are still in the high 40's (Celsius). The second processor sits around
50 degrees - totally unacceptable.

There's probably nothing wrong with 50C.



--
Ian Collins.
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Tao Chen
*nix forums addict


Joined: 05 Apr 2005
Posts: 58

PostPosted: Thu Jun 15, 2006 6:05 pm    Post subject: Re: Properly cooling a W2100z... Reply with quote
Dave Littell wrote:
Quote:
(previously posted to comp.sys.sun.hardware, greeted with
crickets...sorry if you've seen this posting before.)

Hi all,

Does anyone know how to properly cool a W2100z, preferably without
any maelstrom sound effects? Each BIOS rev seems to make more
noise, but not actually keep the system cooler. Has anyone tried
different CPU fans or a different case fan?

I've tried the auto+(aggressive, normal) BIOS settings as well as
the "four-step". There seems to be absolutely no difference in how
the fans are handled among any of these options.

I've installed the latest BIOS (B5S0) and all I've noticed is more
noise, not a cooler system (according to the BIOS temp
measurements). The system is very lightly loaded in a very cool
home and yet the temps are still in the high 40's (Celsius). The
second processor sits around 50 degrees - totally unacceptable.

Has anyone tried a 120mm Sharkoon Silent Eagle for a case fan? Any
observations on long-term reliability?


Thanks,
Dave

The Opterons generate quite a lot heat and the heatsinks included in
W2100z aren't that good. Unfortunately I didn't find any branded
heatsink that's compatible with the socket board in W2100z.
Therefore, in order to dispel the heat effectively, you need a powerful
120mm fan, which means noise.

If you think it's loud now, you haven't experienced the first revision
of BIOS, which drove me nuts. I wasted a lot of time trying to improve
the situation (Oct.2004):
http://www.pbase.com/taochen/w2100z&page=all

Good thing you run in it in a air-conditioned room. 40-50 Celsius
degree of CPU temperature sounds fine to me.

Tao
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Dave Littell
*nix forums addict


Joined: 08 Apr 2005
Posts: 53

PostPosted: Wed Jun 14, 2006 11:07 am    Post subject: Properly cooling a W2100z... Reply with quote
(previously posted to comp.sys.sun.hardware, greeted with
crickets...sorry if you've seen this posting before.)

Hi all,

Does anyone know how to properly cool a W2100z, preferably without
any maelstrom sound effects? Each BIOS rev seems to make more
noise, but not actually keep the system cooler. Has anyone tried
different CPU fans or a different case fan?

I've tried the auto+(aggressive, normal) BIOS settings as well as
the "four-step". There seems to be absolutely no difference in how
the fans are handled among any of these options.

I've installed the latest BIOS (B5S0) and all I've noticed is more
noise, not a cooler system (according to the BIOS temp
measurements). The system is very lightly loaded in a very cool
home and yet the temps are still in the high 40's (Celsius). The
second processor sits around 50 degrees - totally unacceptable.

Has anyone tried a 120mm Sharkoon Silent Eagle for a case fan? Any
observations on long-term reliability?


Thanks,
Dave
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