On 27 Jan 99, at 9:29, Meidling Keith B SSgt wrote:

> I have a question about SDRAM and DIMMs...
>
> Are they the same???  If they are different, what is the difference???
> Are they both 168 pin???
>
> I've heard people talk about both, and wondered if they were the same...

  DIMMs are small circuit boards with memory chips on them.  Along the
bottom edge are 168 conductive connectors, and two gaps.  The exact
position of the gaps indicates the voltage and other characteristics of
the DIMM: EDO (buffered/unbuffered) or SDRAM.  Some SDRAM DIMMs include
a small EPROM ("SPD" - Serial Presence Detect) which can provide the
motherboard with additional information about the capabilities of the
DIMM.

  SDRAM is a memory technology.  Unlike EDO, which is available in 72-
pin SIMMs as well as 168-pin DIMMs, SDRAM is only available in DIMMs.


David G

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