[ILUG] {Q} adding/upgrading DIMMs?

[Brian Foster]

 for assorted reasons I want to add some memory to my
 system at home.  it currently has 256Mb in one DIMM.

 what the manufacturer's manual says (in full) is:

    “• Two memory banks.
     • Supports up to two 3.3v DRAM DIMM modules.
     • Supports up to 1 GByte of system memory using
        two 512 MB DIMM modules.
     • 133 Mhz SDRAM interface.
     • ECC memory checking is supported.
     • Serial Presence Detect (SPD) support.  The BIOS
        automatically detects the speed, type, and size
        of the memory used.
    ‥
    Please use only the DIMM modules as described in the
    specifications.”

 I _think_ the key data here is 133Mhz SDRAM 3.3v DIMM
 (with ECC and SPD).  and whilst not explicitly said,
 I am reading into the above that if there are two DIMMs,
 then the two DIMMs should be “identical” (for some value
 of “identical”).

 however, a price list I picked up from one of the parts
 shops on the way home tonight is listing things like:

    • 512 Mo DDR400     (Mo is the Français for Mb)
    • 512 Mo DDR400 MARQUE
    • 512 Mo DDR-2 533
    • 256 Mo sodimm SDRAM13
    • 512 Mo sodimm DDR2700  ( sorry, I haven't a clew
                                what “sodimm” means? )

 which leaves me rather baffled ... can anyone clarify,
 or point me to site(s?) which can clarify?  I will be
 using Google™ later when I have a chance (I'm unable
 to ATM).

 ( if it helps, the last time I ever upgraded memory
  on my own the term “core” was accurate ....  ;-)
   every time since then, I have just been given the
  right DIMM or chip or whatever (plus, at least once,
  a soldering iron), so all this is just a tiny bit
  new to me .... )

cheers!
	-blf-

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