Subject: RAM

Wayne Ramlogan <[log in to unmask]> asked:
>Is it possible to mix RAM; EDO and SDRAM PC100 or EDO and SDRAM

I ask "On What Fine, Fine Dee-vice Might You Comtemplate Such
Mixings?".

I know of relatively few mainboards that support mixing simms, dimms.
Maybe the new super 7 boards?

I got one. Tyan S1571 tx socket 7. The manual sez stuff like:
  "You can use simm bank 0 with dimm bank 1."
  "You can use simm bank 1 with dimm bank 0."

My personal conjectures (somebody correct me if I'm wrong) are as
  follows:

  1.) Your edo is "rated" 60-70 nanoseconds.
  2.) Your sdram is "rated" 6-10 nanoseconds.
  3.) Your memory bus runs at one constant speed.
  4.) This one constant speed with mixed mem. modules would
      have to approximate the speed of the slowest module.

Hence you would be running sdram rated at 6-10 ns at something
like 60-70 ns, a potential waste of resources. Fine for a
short test period (if it works: I never take stuff like this
for granted). Definitely not recommended in the long
run.

Hope this helps a bit ...

  Zalut,
  David

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** David Nasser                     **     [log in to unmask]  **
** Univ. Mo. St. Louis              **                              **
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