Re: Max. memory on 164LX

[John Grzesiak <johng pcrd net>]

   Well... my board will just plain not work with REGISTERED/ECC no 
matter what
size they are. It only works with ECC/unbuffered..

   But, I have found inconsistencies in spec sheets for the same memory out on
the Internet. So, I think some confusion is understandable.

   It's really too bad that there are no newer boards and we could get the
Alpha to move forward with the technology... But, sadly, I dream too much !!


--


John Grzesiak
---- P.S.T.N. 603.798.4028 ----



Quoting Kazuyoshi Furutaka <furutaka jb3 so-net ne jp>:

> Hi all,
>
> From: furutaka jb3 so-net ne jp
> Subject: Re: Max. memory on 164LX
> Date: Mon, 5 May 2008 23:24:58 +0900 (JST)
>
> > > > From: <furutaka jb3 so-net ne jp>
> > > > Date: Mon May 05 2008 - 04:41:25 AKDT
> > > [...]
> > > >
> > > > How about 128MB DIMMs?
> > >
> > > I have not tested these, but my educated guess is that the problem with
> > > some 256MB modules is that they are built from 9 x 256Mbit chips and the
> > > memory controller on the 164LX only understands individual RAM chips up
> > > to 128Mbit.
> > >
> > > The Kingston PC100-256MB module is built from 18 x 128Mbit chips and
> > > works, wheras the newer PC133-256MB module is built from 9 x 256 Mbit
> > > chips and is not recognized at all.
> > >
> > > If my guess is correct, then 128MB DIMMS with either 9 x 128Mbit chips
> > > or 18 x 64Mbit chips should work. In any case, the memory must be 72
> > > bits wide and *not* registered, as many people have pointed out in
> > > previous posts.
> > >
> > > Please tell us, if you get some exprimental results.
> >
> > Well, I've installed four 128MB DIMMs on a 164LX machine and it was running
> > (not for a long period) without any troubles; the memory modules are 
> > said to be
> > "PC100MHz Registered ECC 168Pin SDRAM" by the seller.
> > Now I'm away from home.  After coming back to my home I'll take a 
> > look at them.
>
> They are four of  Micron MT18LSDT1672G-10EC2:
> according to http://www.memoryten.com/001552.htm,
> it's REGISTERED ECC (PC100, CL2) as I was told.
>
> Yours,
> Kazuyoshi
> --
> Kazuyoshi Furutaka
> furutaka jb3 so-net ne jp
>
> _______________________________________________
> axp-list mailing list
> axp-list redhat com
> https://www.redhat.com/mailman/listinfo/axp-list