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Date:      Tue, 22 Jun 2004 17:29:38 -0400
From:      "Ketrien I. Saihr-Kesenchedra" <ketrien@error404.nls.net>
To:        "Marc G. Fournier" <scrappy@hub.org>
Cc:        hardware@freebsd.org
Subject:   Re: RFC: Chenbro Chassis (RM214)  
Message-ID:  <6.1.1.1.2.20040622171913.02b0b160@error404.nls.net>
In-Reply-To: <20040622121156.O845@ganymede.hub.org>
References:  <20040622121156.O845@ganymede.hub.org>

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At 11:13 AM 6/22/2004, you wrote:
>Looking for thoughts/comments on the above rackchassis ... going to be 
>putting a Tyan Thunder K7x into her, with 6xSeagate drives ... looking at 
>the 460W PSU option, which seems to be the largest they have ...
>Stupid question ... they have a 460W+460W redundant option ... its still 
>*max* 460W, right?  If it needs a bit more, it won't pull from the second 
>one at all, right?
>Anyone with good (or bad) experiences?

http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_869_965%5E3238,00.html

Dual Athlon MP specifications require a typical minimum 460W PSU per the 
AMD SBG. Publication 25823, page 3. Amperage on the 12V must meet or exceed 
16.5A + 13A combined CPU and I/O, +3.3V must have a minimum 27A, +5V must 
have a minimum 29A.
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/25823.pdf

Our old dual MP2000 was powered by a PC Power & Cooling 510XE. Rated for 
640W peak, 510W at 50C. +5V 40A, +3.3V 30A, +12V 34A/38A Peak. Standard ATX 
layout.
http://www.pcpowerandcooling.com/products/power_supplies/maxperformance/turbocools/index_hp_atx.htm

As far as Chenbro, avoid at all costs. We had nothing but trouble with 
them. The backplane connections are non-standard (male to female,) and the 
backplanes frequently lost entire channels due to shoddy quality and 
failing to follow SCSI specifications. Heat was a constant problem due to a 
flawed layout, and the fans were pretty much worthless. I wouldn't take 
another one if someone paid me.


-Ketrien I. Saihr-Kesenchedra <ketrien AT error404 DOT nls DOT net>
# Maybe this world is another planet's hell. --Aldous Huxley
Feanor smiles, "We, of course, are enlightened and s/Maybe t/T" 



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