3 Oct
2010
3 Oct
'10
1:47 a.m.
I am trying to work out what kind of memory to look for to fit in my 433au.
I can see it need 168-pin ECC SDRAM, but I am not clear if it can be
unbuffered or if it must be registered and whether I need PC100 or PC133. I
can also see that the notches on the side to hold the DIMMs in place seem to
be higher up than on most of the DIMMs I can find, not sure if there is a
particular technical term I should include in my searches for this.
Can anyone tell me the required spec?
Thanks
Rob
3 Oct
3 Oct
6:49 a.m.
Rob,
I am trying to work out what kind of memory to look
for to fit in my 433au.
I can see it need 168-pin ECC SDRAM, but I am not clear if it can be
unbuffered or if it must be registered and whether I need PC100 or PC133. I
can also see that the notches on the side to hold the DIMMs in place seem to
be higher up than on most of the DIMMs I can find, not sure if there is a
particular technical term I should include in my searches for this.
Going from very rusty memory, I recall 433au used PC133 memory. I recall moving memory
from a PC into one years ago and being more than happy that it worked.
Huw Davies | e-mail: Huw.Davies at kerberos.davies.net.au
Melbourne | "If soccer was meant to be played in the
Australia | air, the sky would be painted green"
7:21 p.m.
Huw Davies wrote:
Rob,
I thought it was PC66.
Peace... Sridhar
I am trying to work out what kind of memory to
look for to fit in my 433au.
I can see it need 168-pin ECC SDRAM, but I am not clear if it can be
unbuffered or if it must be registered and whether I need PC100 or PC133. I
can also see that the notches on the side to hold the DIMMs in place seem to
be higher up than on most of the DIMMs I can find, not sure if there is a
particular technical term I should include in my searches for this.
Going from very rusty memory, I recall 433au used PC133 memory. I recall moving memory
from a PC into one years ago and being more than happy that it worked. 
6:57 a.m.
At 9:47 AM +0100 10/3/10, Rob Jarratt wrote:
I am trying to work out what kind of memory to look for
to fit in my 433au.
I can see it need 168-pin ECC SDRAM, but I am not clear if it can be
unbuffered or if it must be registered and whether I need PC100 or PC133. I
can also see that the notches on the side to hold the DIMMs in place seem to
be higher up than on most of the DIMMs I can find, not sure if there is a
particular technical term I should include in my searches for this.
Can anyone tell me the required spec?
Wow, ancient history. :-(
IIRC, you need either PC66 or PC100, I don't remember the buffered
part, but I think you need parity RAM. I've used RAM out of PC
servers in most of my Alpha's (the one exception being my
AlphaStation 500/333 which uses proprietary RAM). The DEC 3000/133 &
AlphaStation 200 take 72-pin true parity RAM, and the Compaq XP1000's
take something at least close to the 433a/au, 500a/au, and 600a/au
systems.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com | OpenVMS Enthusiast |
| | Photographer |
+----------------------------------+----------------------------+
| My flickr Photostream |
| http://www.flickr.com/photos/33848088 at N03/ |
6 Oct
6 Oct
12:16 p.m.
On Sun, 3 Oct 2010 09:47:36 +0100
"Rob Jarratt" <robert.jarratt at ntlworld.com> wrote:
Can anyone tell me the required spec?
I am not
sure about unbuffered vs. registered.
It needs PC83 (!) ECC SDRAM that is CL2 capable, two identical modules
per bank, max. 256 MB per DIMM. I just threw in 256 MB PC133 ECC DIMMs
from a PeeCee supplier when PC133 was curent technology
and they worked.
--
\end{Jochen}
\ref{http://www.unixag-kl.fh-kl.de/~jkunz/}
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healyzh＠aracnet.com -
huw.davies＠mail.vsm.com.au -
jkunz＠unixag-kl.fh-kl.de -
ploopster＠gmail.com -
robert.jarratt＠ntlworld.com