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Unable to upgrade RAM......

Hi all....

I have a pc in my office when I tried to upgrade the RAM (256 MBDDR II RAM exists) with 512 MB DDR II RAM in the other slot, the system booted with a error stating "Memory could not be initialized and Channel 'A' is not compatible with Channel 'B'' though my RAM size has incremented I used to see the same condition before upgrading (pc with intel PIII processor with 2.8Ghz) what could be done to get the best optimized performance out of that...?


Regards,
Hari

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  • harikreative Feb 11, 2008

    It works!! and as of now the pc is being inserted with 512 and i want this 256 to be placed in the other slot. What might be the cause of this problem?

  • harikreative Feb 11, 2008

    1 memory stick is 256 MB DDR II type and incremented it with 512 MB DDR II type in the other slot provided.



    Mother board - intel 8280 1G (ICH7 FAMILY)

  • brian c
    brian c May 11, 2010

    What happens if you leave just the 512 installed and take out the 256?

    Are they both the same speed memory?

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  • Master
  • 589 Answers

Sounds like they are 2 significantly different speed memory sticks. Normally, the faster of the two sticks will "clock down" to match the slower stick.

Without knowing the motherboard and memory stick specifications, it's hard to tell, but it's most likely a speed issue.

Posted on Feb 11, 2008

  • brian c
    brian c Feb 11, 2008

    I think the confusion here is the memory speed itself.

    For instance, one stick may be PC2-4200 (DDR2-533) and the other is PC2-3200 (DDR2-400), etc.

    DDR2 only means the "type" of memory, not the actual speed.

    The speed of the memory "should" be on the labels, or stamped on the memory stick somewhere.

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