From: Peter Machule (pmachule_at_hotmail.com)
Date: Sat Aug 03 2002 - 11:16:45 EDT
A CL2 speced Dimm will work fine. It will simply be read as a CL3
( slower ).
If IBM finally figured out the pc 100 /pc 133 spec, then even better.
( The 600 is a wonderfull example of them not understanding it ! )
If the bios is done correctly, then a Cl2 speced chip will actually be used
in Cl2 mode.
Note the difference is rather small, under 3 % or so.
All the info the Bios needs to set the timing registers is provided by the
SPD chip on the Dimm module.
Sadly most Bios writers are lazy . And a few SPD ships are not programmed
correctly.
;-}
..peter..
a real simple overview of the SPD stuff
http://www.dewassoc.com/performance/memory/pc100_compliant_3.htm
----- Original Message -----
From: "Ray Bay" <raybay_at_broadcast.net>
To: "sojourn" <sojourn_at_pacific.net.ph>
Cc: <THINKPAD_at_cs.utk.edu>
Sent: Saturday, August 03, 2002 7:35 AM
Subject: Re: TP T23 Memory question
> sojourn wrote:
>
> > Hi,
> >
> > Just got a T23 and would like to upgrade the memory, I saw that the
> > official ram in IBM uses CL3 while and the ones from Centon and
> > Crucial are CL2, is ok to use ram that are CL2 instead of CL3?
> >
> > Thanks
> >
> >
> >
> No, if they want CL-3, use CL-3. There is a significant difference in
> the two.
>
>
>
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