Ram question?

Posted on 2006-05-01
Last Modified: 2013-11-10
I currently have 1 G ram in my machine: Athlon XP 64, 1G DDR 400 (2x512), Windows XP Pro 64, ect...

I was thinking about buying more ram and was wondering if I got another pair of sticks that were 1G each if that would affect my system negativly at all?

I would then have 3G total ram 2x512 and 2x1G

Didn;t know if it was better to have all 4 sticks the same or not, thanks for any input.
Question by:alivemedia
    LVL 69

    Accepted Solution

    You will probably need to set the Command Rate to 2T in the BIOS for 4 modules of RAM, which most Athlon64 systems have to do.  You may also need to manually set the RAM latency if the two sets differ in their SPD settings; otherwise, the motherboard may try to run the slower pair at the speed of the faster one and fail.  Check if your motherboard has any limitations on what size RAM modules it can handle and how to populate the slots:
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