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Memory questions

By valbren
Jan 29, 2010
  1. i have three ddr 400 pc3200 sdram dimms.two of them are 512mb and they came on board in the fujitsu pc.the third one is a ddr400 pc3200 sdram with 1gb capacity.the two of the same are working in dual channel.if i put the third one (1gb)the dual channel is off.does it have to be a problem(reboots,bsod e.t.c)?the two of the same supports early ras# precharge.the big one is not.is it also a problem(big or small)or not?
     
  2. raybay

    raybay TS Evangelist Posts: 7,241   +9

    You want the memory to be identical in dual channel, for best results. Otherwise, the system runs at the speed of the slowest, and conflicts are always a possibility.
     
  3. Archean

    Archean TechSpot Paladin Posts: 5,682   +86

    You'll put in peril, your system's stability if you try to plug in different kind/type of ram in a system; therefore as raybay very rightfully suggested get 'identical' type/make of ram sticks.
     
  4. valbren

    valbren TS Rookie Topic Starter

    i suppose that the capacity affects the speed of the ram ?
     
  5. Archean

    Archean TechSpot Paladin Posts: 5,682   +86

    Ram speed is not related to capacity.
     
  6. valbren

    valbren TS Rookie Topic Starter

    thanks for the replies.
     
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