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Thread: Can't get dual channel RAM to work?

  1. #1
    Join Date
    Feb 2011
    A house.

    Default Can't get dual channel RAM to work?

    My system won't post when I have both of my kingston HKX1600C8D3K2/4GX in the A2/B2 or A1/B1 slots. It will boot if I just have 1 of the 2gb sticks in B1 or A1. My motherboard is 880G Extreme3 from ASROCK. My processor is an AMD Phenom II x4

    When I put both sticks in the mobo led returns a D0(Go to flat mode with 4GB limit and GA20 enabled. Verify the bootblock checksum.)

    I've tried swapping the ram positions and changing some BIOS settings.
    Memory Controller Mode:unganged
    Bank Interleaving:Auto
    Channel Interleaving:Hash2
    CAS Latency:9
    DRAM Voltage:~1.75
    Memory Clock:800Mhz DDR3_1600

    I'm afraid if I keep playing with BIOS settings and plugging/unplugging my RAM I'm going to break something, where am I going wrong here?

    Last edited by walkerb0h; 02-10-2011 at 08:47 AM.

  2. #2
    Join Date
    Dec 2010
    Henderson, NV

    Default Re: Can't get dual channel RAM to work?

    First, I had that error code and it was caused by the UCC unlock feature on the board. Make sure its turned off in the bios. there are 2 places you need to check: the bios boot up screen "push x to enable UCC" make sure thats not active, and in the "overclocking" section of the BOIS labeled "core unlocking"

    If that doesn't do it then you may have a bad memory controller in your CPU. Which means you will need a new CPU.

    Good Luck!
    Phenom II x4 955 BE @3.63Ghz
    870 extreme3 mobo
    8Gb Kingston pc3-10600
    Samsung 830 SSD 128Gb Sata 3.0
    Crucial SSD 64Gb Sata 3.0
    WD 1Tb 64mb Sata 3.0 black
    650w Modular Thermaltake
    N520 hyper CPU cooler (upgraded fans)
    Sapphire HD6950 Overclock GPU
    WEI overall score 7.4

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