Dual Athlon MP 1U units

Lalit Jain ljain at angstrom.com
Sat Jan 26 13:30:59 EST 2002


Hi,

I do know for a fact that 300W PFC power supplies will work for dual AMD
systems with up to 3 GB of memory and dual IDE HDDs.  The caveat is that
300W will not drive AGP cards.  Assume an extra 110 W for AGP,
especially for high performance cards such as ATI FireGL2. BTW --
Certain high performance AGP cards will not properly work with dual AMD
systems -- even when using the mem-nopentium option in LILO...

PFC power supplies are standard and are required for certain
international deployments. 

Lalit Jain
Angstrom Microsystems, Inc.
27 Drydock Ave
Boston, MA 02210

617-695-0137 ext 11



-----Original Message-----
From: beowulf-admin at beowulf.org [mailto:beowulf-admin at beowulf.org] On
Behalf Of Ben Ransom
Sent: Saturday, January 26, 2002 11:03 AM
To: beowulf at beowulf.org
Subject: Re: Dual Athlon MP 1U units


Are PFC (power factor correction) power supplies standard, or something 
special wrt providing only required power and therefore less heat?  A 
vendor told me that a dual 1900 Athlon on Tyan 2466 mboard can be run in
1U 
if done with a 300w PFC power supply.  Do they know some great secret,
or 
are they stretching physics?

PS:  AMD shows one vendor's case approved with the Athlon MP running at
all 
available clock speeds, i.e. that would include 1900+
-Ben Ransom


At 02:30 AM 1/26/2002 -0600, you wrote:
>Velocet wrote:
> >
> > Whats the power dissipation of running dual 1.2 GHz Mp's? How about
for
> > 1.33Ghz regular athlons in non-SMP configs as comparison? (As well,
how 
> much
> > heat comes off typical power supplies to run these systems?)

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