Window detects 3.25GB RAM when I installed 4GB

By qwertymaster ยท 33 replies
Jun 10, 2011
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  1. qwertymaster

    qwertymaster TS Rookie Topic Starter

    Yes one on each stick.yes they have mentioned 800mhz on the sticker,i have even checked the hologram,matched it with the one in their website it seemed genuine.
    I checked my Bios there was this section for voltage setting when i entered there was:

    1.ACPI suspend type - S3(STR)
    it had another option of S1(pos)but it was set at s3(STR)

    2.Remote wake up - on

    3.Auto power on - Disabled

    4.AC recovery - Off
  2. Lokalaskurar

    Lokalaskurar TS Enthusiast Posts: 544

    That looks like the power settings. Even though it's good to see these settings, they are not related to the memory voltage - remember these if you plan on running a Linux OS in the future ;)

    You'll have to continue searching for the memory settings. Remember: as I've said, 'tweak' settings are not standard, there is a chance that your BIOS/motherboard does not support a manual change of the voltage.

    The MHz is in fact the "speed" - the rate of a read/write cycle unless I'm mistaken. 800 > 667, the 800MHz-stick is faster.

    That explains the 800MHz --> 667MHz drop we experienced earlier.
    By running a 800MHz-rated stick side-by-side with a 667MHz stick, you are actually decreasing the speed of your memory-system. But keep in mind that the amount of available memory has still gone up.
  3. Mark56

    Mark56 TechSpot Paladin Posts: 1,886

    I just checked the system details on the Dell site and you only have two RAM slots.

    As your sticks have different numbers on each that would suggest this is not a matched pair.

    Try this experiment.

    Put just one of the new sticks into DIMM slot 1 leaving the other slot empty, boot the PC and check in the Bios to see what frequency it shows, power down and swap the sticks over then repeat the process.

    I could be wrong but I suspect one will show 800MHz and the other will be 667MHz.
  4. qwertymaster

    qwertymaster TS Rookie Topic Starter

    I tested them individually and what I discovered was, individually also they were running at 667mhz
    and I called the dealer and asked him to get the sticks changed...though on the sticker its written 800mhz i think they have mistakenly put wrong sticker...I would rather buy Kingston or Transcend stick instead I suppose they don't deceive like this... anyway thank you so much for helping me throughout MARK56.
  5. Mark56

    Mark56 TechSpot Paladin Posts: 1,886

    Your welcome.
  6. qwertymaster

    qwertymaster TS Rookie Topic Starter

    yes I ws right problem were the sticks bought kingston sticks working pretty well at 800mhz...
  7. Mark56

    Mark56 TechSpot Paladin Posts: 1,886

    Excellent, you can't go wrong with Kingston.
  8. giorgiotani

    giorgiotani TS Rookie

    It will not resolve the problem, if it is XP 32 bit. It will let you use the same amount of memory of 7 32 bit as they suffers the same limitation due to the 32 bit memory management.
  9. Mark56

    Mark56 TechSpot Paladin Posts: 1,886

    I know you are only trying to help but the post is resolved and that point was answered in post 25:)

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