6GB w/ 4.00 Useable - Why is this so?

http://gyazo.com/c8eaecf566946cf9caf323dd4eb7a74c.png?1336325967

Above I have posted an image from Windows. I have no clue as to why I only have 4.00GB usable.
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More about useable
  1. What's your specification ?
  2. 2.67 gigahertz Intel Core i7 920
    64 kilobyte primary memory cache
    256 kilobyte secondary memory cache
    8192 kilobyte tertiary memory cache
    64-bit ready
    Multi-core (4 total)
    Hyper-threaded (8 total)

    Board: Gigabyte Technology Co., Ltd. EX58-UD3R
    Bus Clock: 133 megahertz

    4120.72 Gigabytes Usable Hard Drive Capacity
    2319.41 Gigabytes Hard Drive Free Space

    ASUS DRW-24B1ST ATA Device [Optical drive]
    MagicISO Virtual DVD-ROM0000 [Optical drive]

    OCZ-VERTEX3 [Hard drive] (120.03 GB) -- drive 2, s/n OCZ-1SSO22RB024NHDQU, SMART Status: Healthy
    SAMSUNG HD204UI [Hard drive] (2000.40 GB) -- drive 0, s/n S2H7J1CZ919901, rev 1AQ10001, SMART Status: Healthy
    WDC WD20EARS-00MVWB0 [Hard drive] (2000.39 GB) -- drive 1, s/n WD-WMAZA0278223, rev 50.0AB50, SMART Status: Healthy

    ASUS DRW-24B1ST ATA Device [Optical drive]
    MagicISO Virtual DVD-ROM0000 [Optical drive]

    OCZ-VERTEX3 [Hard drive] (120.03 GB) -- drive 2, s/n OCZ-1SSO22RB024NHDQU, SMART Status: Healthy
    SAMSUNG HD204UI [Hard drive] (2000.40 GB) -- drive 0, s/n S2H7J1CZ919901, rev 1AQ10001, SMART Status: Healthy
    WDC WD20EARS-00MVWB0 [Hard drive] (2000.39 GB) -- drive 1, s/n WD-WMAZA0278223, rev 50.0AB50, SMART Status: Healthy

    4096 Megabytes Usable Installed Memory

    Slot 'A0' has 2048 MB
    Slot 'A1' has 2048 MB
    Slot 'A2' has 2048 MB
    Slot 'A3' is Empty

    ATI HDMI Audio
    AVerMedia H727 PCIe Hybrid DVBT HDMI Capture Device
    Realtek High Definition Audio
    VideoMate TV SAA7133/35, Hybrid Capture Device

    ATI Radeon HD 5700 Series [Display adapter]
    Samsung SyncMaster [Monitor] (21.0"vis, s/n MY22H9DS310171, March 2009)
    SyncMaster 2243WM(Analog) [Monitor]
  3. Imo upgrade your BIOS

    www.gigabyte.us/products/product-page.aspx?pid=3449#bios
  4. http://goo.gl/PcD8j

    This is the board I have. I shall try an update.
  5. [ Before updagrade BIOS take back up of BIOS then upgrade ]
  6. How on earth do I do that?
  7. What happend ?
  8. Whats wrong ?
  9. Slot 'A0' has 2048 MB
    Slot 'A1' has 2048 MB
    Slot 'A2' has 2048 MB
    Slot 'A3' is Empty


    Refer to page 16 of your manual:
    http://download.gigabyte.us/FileList/Manual/motherboard_manual_ga-ex58-ud3r_e.pdf

    It appears with 3 modules you may be leaving the wrong slot unoccupied.
  10. Yes you are.

    You have 4 slots therefore you should have dual channel sticks not random array of sticks.

    What memory do you have? It is more than likely a set of triple channel RAM, or just 3 random modules.

    What you can do now is take out each stick and use only one at a time in different slots just to make sure one of the slots aren't dead or dying.

    Something similar happened to me where my PC only read 8 or my 12GB of RAM, my middle slot ended up being dead.

    So check your stuff, and either use 2 sticks of RAM or get a new set.
  11. Razec69 said:
    Yes you are.

    You have 4 slots therefore you should have dual channel sticks not random array of sticks.

    What memory do you have? It is more than likely a set of triple channel RAM, or just 3 random modules.

    What you can do now is take out each stick and use only one at a time in different slots just to make sure one of the slots aren't dead or dying.

    Something similar happened to me where my PC only read 8 or my 12GB of RAM, my middle slot ended up being dead.

    So check your stuff, and either use 2 sticks of RAM or get a new set.



    Incorrect. He has an LGA 1366 build so it's triple channel.

    Try this. Start > Run > Msconfig > Boot > Advanced Options > Make sure maximum memory is unchecked.

    To operate correctly in triple channel mode I believe your RAM needs to be in the white slots as stated above.
  12. anort3 said:
    Incorrect. He has an LGA 1366 build so it's triple channel.

    Try this. Start > Run > Msconfig > Boot > Advanced Options > Make sure maximum memory is unchecked.

    To operate correctly in triple channel mode I believe your RAM needs to be in the white slots as stated above.



    Why on earth does he have a mobo with 4 RAM slots?

    I didn't read he had a 920 as I just skimmed through, but it's weird. Unless he has 6 slots total and didn't say that.

    And yes putting the ram in a different config, as every other slot will do the trick. IDK It was 2 AM for me and I just skimmed through it.

    After glancing through the manual. Some pictures show 4 slots, I have never seen this on a LGA1366, which I have as well.

    But here is your solution

    When enabling 3 Channel mode with three or four modules, it is recommended that memory of the
    same capacity, brand, speed, and chips be used.
    Wh e n e n a b l i n g 3 Ch a n n e l mo d e wi t h t h r e e memo r y mo d u l e s , b e s u r e t o i n s t a l l t h em i n t h e
    DDR3_1, DDR3_2 and DDR3_4 sockets.
  13. imo he did already correct but having problem to using complete 6GB :) not the 3 channels
  14. Razec69 said:
    Why on earth does he have a mobo with 4 RAM slots?

    I didn't read he had a 920 as I just skimmed through, but it's weird. Unless he has 6 slots total and didn't say that.

    And yes putting the ram in a different config, as every other slot will do the trick. IDK It was 2 AM for me and I just skimmed through it.

    After glancing through the manual. Some pictures show 4 slots, I have never seen this on a LGA1366, which I have as well.

    But here is your solution

    When enabling 3 Channel mode with three or four modules, it is recommended that memory of the
    same capacity, brand, speed, and chips be used.
    Wh e n e n a b l i n g 3 Ch a n n e l mo d e wi t h t h r e e memo r y mo d u l e s , b e s u r e t o i n s t a l l t h em i n t h e
    DDR3_1, DDR3_2 and DDR3_4 sockets.


    as color's your right +1
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