Mixing Memory Speeds in 7N400-Pro2

Discussion in 'Gigabyte' started by Mal, Nov 17, 2003.

  1. Mal

    Mal Guest

    I currently have a 7N400-Pro2 motherboard with an AMD 2800 XP installed and
    2x 512Mb DDR400 D/S modules running in Dual Channel mode. I also have 2x
    256Mb DDR333 S/S modules sat here doing not a great deal.

    Now will they work in my current configuration at all? ... or will the mobo
    drop all the memory speed down to DDR333, if so would the extra 512Mb make
    up for the drop in bus speed or am I better to stay with the 1Gb at DDR400


    Mal, Nov 17, 2003
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  2. Mal

    Hammer Toe Guest

    IMO, its almost CERTAIN that you would be better off with 1GB of
    DDR400 than (efectively) 1.5GB of DDR-333.

    Even with (only) 1GB (in my experience), you will likely never have to
    page/will almost certainly have more memory free than you/the system
    can use unless you are a VERY unusual 'user' and would get more
    perf/benefit from the extra memory access speed/bandwidth than you
    would from the extra (unused, by the system) memory.
    Hammer Toe, Nov 18, 2003
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  3. I have not received my board yet, but on the Gigabyte website in the BIOS
    update history, it says on one update that if you populate the second set of
    memory slots, the memory speed will be reduced to 266. Interesting, yes?
    Larry Albertson, Nov 22, 2003
  4. Hi

    My suspicion is that the cpu/chipset will not drive the capacitance of
    additional memory at full speed. Probably the only way to get more memory
    at max speed is to remove the original memory and replace it with larger

    BTW it is nice that the manual mentions this. I've set up boards where
    this is not mentioned. It is left up to the user to see how lucky/skilled
    he is at getting a board to run at rated speed.

    Random Electron, Nov 22, 2003
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