ASUS P6T Deluxe v2 - still sporadic disappearing of 2GB of RAM

Discussion in 'Asus' started by Roland Schweiger, Feb 14, 2013.

  1. Hello Everyone,
    This and similar problems have been disgussed in many forums and there
    are so many different hints of solutions.
    Just would like to know if anyone came across one that really works.

    My setup:

    ASUS P6T Deluxe v2 Mainboard
    Intel I7_920 Processor @ 2,66 GHz
    BIOS ver. 1202 (if i understand correctly, it's the latest version of
    22.12.2010)
    OS is Windows7 64bit

    RAM memory is 3x 2GB DDR-3 sticks seated in DIMM Slots 0, 2, and 4.
    The RAM modules are CORSAIR CMX6GX3M3A1600C

    In most cases, when powering up the machine, all 3 RAM sticks are
    correctly detected, thus yealding to 6GB of total memory, running at
    1600 MHz.
    Sometimes however, one stick simply "disappears" and even the BIOS
    will show only 4 GB of RAM.
    In this case, the BIOS and the OS report 4GB of RAM.
    The utility "PC Wizard 2012" will tell me that 6GB total memory are
    installed, but will show tha first DIMM slot empty.

    Powering down, entering BIOS, decreasing the RAM clock speed to 1033
    or 800 MHz, changing all sorts of settings, has no effect, several
    times when powering up, only 4GB are detected.

    Then, out of the blue, when powering up again, 6GB are detected and
    everything is back to normal.
    When working with the OS and putting the machine into S3 (standby) and
    awaking, it will always tell 6GB no matter how often i put the system
    into standby.

    Certainly i also tried moving the modules around in the slots.

    Aside from this effect, the system is totally stable.

    As this problem has often been disgussed, i do not assume that the
    hardware is faulty.
    Has anyone got a good explaination?

    greetings from Vienna

    Roland Schweiger
     
    Roland Schweiger, Feb 14, 2013
    #1
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