[rescue] memory trade, anyone? (and misc. x86 rambling)

[Loomis, Rip]

If some memory weenie can answer this, I would love
to know the details myself.  From what I've been
able to find, it seems to be related to the newer
higher-density chips, and possibly the way refresh
cycles are handled.  I ended up trading a 256MB
PC133 DIMM straight-up for a 128MB PC133 DIMM that
a FOAF had--because the 128MB stick worked in my
target system.  I'm about to buy DIMMs to populate
an old TX motherboard, and I'm probably going to
specifically buy 128MB PC100 DIMMs even though the
MB supports a single 256MB DIMM--just so that I
can minimize potential problems.  It's a pain, but
it's still cheaper than buying EDO 72-pin SIMMs
for the older systems...

  --Rip

> -----Original Message-----
> From: Dan Sikorski [mailto:me at dansikorski.com]
> Sent: Tuesday, 13 November, 2001 15:19
> To: rescue at sunhelp.org
> Subject: Re: [rescue] memory trade, anyone? (and misc. x86 rambling)
> 
> 
> On Tue, 2001-11-13 at 15:04, Big Endian wrote:
> > >  >My guess is that ECC modules MUST be run at the speed 
> that they are
> > >>intended to run at, unlike their non-ECC bretheren.  Does 
> that make
> > >  >sense? 
> > >
> > The thing is not all PC motherboards support/like ECC.  The ECC is 
> > whats killing you.  If you have an ECC capable board (most 
> athlon/P4 
> > boards) then it will work fine.  A lot of older PC boards P3 and 
> > below didn't support ECC.
> 
> Unfortunately, that isn't the case. both the funky micron, 
> and the SD-11
> support ECC, but act as though there's nothing there when 
> that memory is
> in them.