Re: Dual Athlon XP 1800+ on Tyan Thunder K7 or Tiger MP anyone?

[Jeff Nguyen]

512MB modules are built using either 128-Mbit DRAM
or 256-Mbit DRAM. The former has twice the number
of DRAM IC over the latter. Due to the higher density
DRAM, there is a significant increase in cost. Since
Corsair uses 256Mbit DRAM, their 512MB modules
cost a lot more.

When you see a much cheaper 512Mb modules, that is
because it is built using 128Mbit DRAM.

Jeff

----- Original Message -----
From: "Joel Jaeggli" <[e-mail]>
To: "John J Tobin" <[e-mail]>
Cc: <[e-mail]>
Sent: Friday, October 12, 2001 12:32 PM
Subject: Re: Dual Athlon XP 1800+ on Tyan Thunder K7 or Tiger MP anyone?

> On 11 Oct 2001, John J Tobin wrote:
>
> > On Thu, 2001-10-11 at 14:14, bill davidsen wrote:
> > > In article <1002667385.1673.129.camel@phantasy> [e-mail] wrote:
> > >
> > > >Completely Agreed.  I am thinking of getting a dual AMD system for
doing
> > > >more kernel work (tackle AMD and SMP).  My main machine is a P3 now.
> > >
> > > The issue right now may be RAM cost. I just bought 512MB PC133 for
> > > $140/GB, while "registered PC2100" memory is about $900 from the same
> > > source. I think that's what the Tiger wants, isn't it?
>
> registered ecc dimms from crucial and kingston valueram are barely more
> than non-registered parts... I see the 512MB kingston registered ecc ddram
> part for $220 from a large mailorder house. the same spec part from
> corsair is still $489 from the same vendor. given the headaches that
> result from having to debug problems/faulty dimms on a machine with 2GB of
> ram and the non-trivial engineering that went into getting 4 reasonably
> spaced ddr dimm sockets on the mainboard. I expect registered ecc dimms
> will be well worth it, if only so that you can rule out the memory as the
> culprit if you have certain kinds of issues...
>
> joelja
>
>
> > > --
> > > bill davidsen <[e-mail]>
> >
> > The Tyan Tiger and Thunder both take Registered DDR DIMMs. Though
> > anandtech got it running using only one pair of unregistered, other
> > combinations of unregistered failed to boot. There are also no SMP
> > athlon chipsets that use PC133.
> >
> >
> >
>
> --
> --------------------------------------------------------------------------
> Joel Jaeggli        [e-mail]
> Academic User Services      [e-mail]
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