Question about Asrock 775VM800 Motherboard

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Upgrading ram Hello, Saw your answer about another ram upgrade problem and found interesting what you say about the confusing manual. that´s right! I´m checking it right now and I don´t seem to understand what can I do... I have slot 1 occupied with a 512mb pc3200 dimm and I want to upgrade the pc to 1gb or maybe 1512mb ram. You say it won´t work with slot1=512mb pc 3200 and slot2= 1gb pc3200? What would you advise? Thanks in advance, regards Rui Reis

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  • reisrui May 27, 2008

    Thanks for your answer, Mike.

    So, It´s best to just buy a 1GB PC2700 333mhz and put it in slot2?

    Can I then have my actual 512mb pc3200 + this 1gb pc2700 running with no problems?

    Thanks again,

    Rui

  • reisrui May 29, 2008

    Hello again, map9966



    Just to check another thing, when you said "I can’t be 100% sure of the 1GB of PC3200 400MHz into slot 2, will run at all!".

    Even if doesn´t work, is it risky to try to insert this kind of dimm in slot2 just to try? I´m afraid to damage the board...

    Thanks again,

    Rui

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Hi reisrui, yes it is odd. (It's not the first time I have seen this.)
According to you're manual on page 6, under Specifications. The manual say's you can run up to a Max speed of PC3200 400MHz, 1GB in slot one. In slot 2 you can run a Max of 1GB of PC2700 333MHz in slot 2. Every motherboard I have come across that can run two different speeds of memory. The system will reduce the Max speed to the lower MHz memory speed. If you currently are using 512MB PC3200 400MHz in slot 1 & add 1GB of PC3200 400MHz into slot 2 for a total of 1.5GB of memory. The motherboard will ruduce the total memory over all speed to PC2700 333MHz. Motherboards alway run at the lower memory speed if two different speeds are presant.
I can’t be 100% sure of the 1GB of PC3200 400MHz into slot 2, will run at all! Or if it will be reduce down to 333MHz. I am sure you can run 2GB of PC2700 333MHz, 1GB of memory per slot in you're board for a total of 2GB.

If I can help you further, feel free to post.
Suggestions & comments welcomed.
Mike

Posted on May 27, 2008

  • Mike Peluso
    Mike Peluso May 27, 2008

    You shouldn't have a problem with that reisrui. Total memory 1.512MB running at 333Mhz.



    Mike

  • Mike Peluso
    Mike Peluso May 30, 2008

    Hi reisrui, no sir you will not hurt the board running two different speeds. As I mentioned the faster 400MHz will be reduced to run at 333MHz. (As per manual spec's).

    The voltage for both DIMM's is the same. If you recently bought 1GB of 400MHz memory, you should try returning it for the 333MHz memory. You might save a few bucks!



    Mike

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