Another DRAM <-> FSB question

Discussion in 'CPU, Motherboards and Memory' started by gabb, Sep 29, 2008.

  1. gabb

    gabb Geek Trainee

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    Hi guys...

    I'm trying to get my ram to the advertised 1066mhz



    CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory

    Newegg.com - CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory - Desktop Memory



    Asus P5Q Pro + intel e8400


    I can only get the FSB to 490 and pass memtest+


    Voltage is set to 2.1 as advertised. (I ran it at 2.11 to 2.2 and no go)

    DRAM Freq in bios is set to 981mhz.

    [​IMG]


    I've been reading reviews on newegg and they say they can get to that speed without a problem with this ram.

    Note: multiplier is 6.5 x 490. Cpuz shows 6 x 490 because of C1E halt state.

    I can set it to 8.5 x 400 fsb and the BIOS let's me choose varios DRAM freq speeds and 1066 is one of them. But my

    fsb is still 400.


    So my questions are:

    1- I'm I doing something wrong?
    2- Should I leave my settings at 6.5 x 490? would there be much of a performance difference to 533?
    3- Is 6 x 490 better (almost stock speed) than 9 x 333?
    4- is my ram still running at 533 (dual channel) if I set it to 1066 in bios even though my fsb is 400?


    What would be the optimum combination for you guys?

    Sorry for so many questions guys.. but the dram:fsb ratio thing is hard...

    Thanks!
     

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