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Help DDR2 800 Mhz runs at 333 Mhz with Athlon 64 X2

Discussion in 'Overclocking' started by Setup.exe, Feb 23, 2010.

  1. Setup.exe

    Setup.exe Guest

    Hi everybody

    I just need help to correct bios settings, if possible to get best
    results - no overclock needed (as I havent got the propper cooler for
    the moment) :

    The main problem is my two DDR2 800 - 2 GB each (1) are only recognized
    as DDR 400 Mhz when I set bios to "optimized settings".

    If I put manually the clock ram to 800 Mhz, its never detect at 800 but
    another value (400 Mhz if i remember) AND the OS crashes frequently. If
    I let on Auto it brings DDR2 667 @ 333 Mhz - Dual Channel 128-bits
    Tcl 5 trcd 5 trp 5 tras 14 (1T timing)

    The multiplier seems to be correct and optimal letting the bios choose
    it, it brings : 2000 Mhz (200x10.o)

    I'm lost in how to set the HT frequency, as the menu offers only
    multipliers 1 X to 5 X - so I cannot see the frequency - and dunno if
    there's somthing to change here ?

    I saw this interesting online calculator, but I miss too much infos and
    general understanding to use it :

    Hope someone can help



    (1) RAM

    Type: DDR2 DIMM
    Capacity : 2 x 2GB SINGLE STICK
    Speed : DDR2 800Mhz PC6400
    Low Density : YES
    Pins : 240Pin
    ECC/Registered : No/No
    Voltage: 1.8V
    CAS Latency : CL 5
    Unbuffered DIMM

    (2) Socket / Motherboard :

    EPOX EP-MF4-J3 Motherboard & AMD 3800+ Dual Core AM2 Pr - Socket Am2

    (3) Processor

    AMD 3800+ Dual Core AM2

    Cpuz said its a Windsor family
    See technical table here : http://fr.wikipedia.org/wiki/Athlon_64_X2#Windsor
    Setup.exe, Feb 23, 2010
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  2. Setup.exe

    peter Guest

    Double Data Rate 800 ram actually runs at 400 x2
    set it to 400
    peter, Feb 24, 2010
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  3. Setup.exe

    Setup.exe Guest

    Uhh, strange .. I figure that 2 x 400 never makes 800 mhz speed ..
    So with the 2 ddr modules it makes 4 x 400 mhz ...?

    I thought the multiplier was to set correctly.

    Well : if i force ddr to 400 : it says 200 mhz on the POST !!!
    It's less than to let the ddr to AUTO (333 Mhz) ...

    Any other idea ?

    Thanks !

    Setup.exe, Feb 24, 2010
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