Max. memory on 164LX

[John Grzesiak]

    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 at jb3.so-net.ne.jp>:

> Hi all,
>
> From: furutaka at jb3.so-net.ne.jp
> Subject: Re: Max. memory on 164LX
> Date: Mon, 5 May 2008 23:24:58 +0900 (JST)
>
>> > > From: <furutaka at 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 at jb3.so-net.ne.jp
>
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