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Thread: Do "dual channel" boards use all three slots??




  1. #11
    Join Date
    Jun 2003
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    straight outa the A7N8X-Deluxe manual (page 14 for those that have one)
    "Note: To enhance system performance, utilize dual-channel feature when installing additional DIMMs. You may install DIMMs in the following sequence: Socket 1 and 3 or Sockets 2 and 3 or Sockets 1, 2, and 3."

    this leads me to believe you can use all three in dual channel mode.

    Or, am i reading it wrong?

  2. #12
    Join Date
    Jan 2002
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    /Fires Missiles

    Quote Originally Posted by Brian508
    :mad:
    Ok this is real simple as far as DDR is concerned frist
    things frist DDR runs 1600---3200+ for now
    So get the DDR thats right 4 Ur board As per Asus Spects out on there web site
    As far as the 2 bank v 3 bank fill
    If Im not mastaken U got an on board Gpu vnida 2 eng grifics.
    Now You will need to asign some memory to handle this in the bios Your mem. banks r set 1 then 2Twin banks
    so yes you should get matched pairs Of DDR 3200 512 each
    Totaling 1024Mb of DDR in 2 banks
    got to have over 1 gig of memery on this newer boards to allow the Os to operate freely SEE Overclocking Forms
    For a mere 10-25$ /unit, many local community colleges teach a wonderful class that aides in everyday life. Depending on your job siuation, it can also get you a raise. The class is titled Communications 101: HOW TO MAKE SENSE.

    mjmnam: thanks for busting out the manual, it does seem to be that you are correct in that 3 slots can still utilize dual channel.

    webe3: dual channel capable motherboards have chipsets (like nForce2) that can utilize two RAM sticks better than one. This means that on one clock cycle, the North bridge can access both sticks for reading, rather than one after another. Its more complicated thatn that, but i dont do well remembering that stuff. Don't think this is double the speed thou. Dual channel environments tend to be 4-8% faster than single channel environments, because of the way chipsets work. Oddly, dual channel runs faster with 333MHz RAM rather than 400MHz RAM (Athlon at stock 166 FSB)

  3. #13
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    Jul 2003
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    High all :smokin:
    I beleave that all 3 will run dual channel on a 333 bus speed
    Now correct me if Im wrong :cheers:
    Its when we try to get the bus up tp 400 That only 2 sticks max is allowable
    the board is O\c (OverClocked) to run a 400 bus
    THIS is when we run, memory that the board mfgs suggest
    to achive the 400 bus speed
    What DDR, is just dubbleing the bus speed(Clockwavel) of a 133 mem chip.
    Back when 133 was out with the 1 gigs DDR started at like 1600 now to day it's at 3200(seen some at 3700)dont Know how good it would run Hell they now got aM/B bus at 600

    When will it ever Stop

    : peace2: : peace:
    OLD! AmD 1.33 266 internal Bus
    384Mb Pc133 Micron cas3
    Asus Kt133Mb- S.B.PCI 512
    G-Force 2 Ti 128MbDDR
    4444$$$$$$$$$$$$$$$$$$
    System Upgrade on StandBy.
    $$$$$$$$$$$$$$$$$$$4Parts
    Well hell its 5 yrs Old Bult Bak When

  4. #14
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    Jan 2002
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    Quote Originally Posted by Brian508
    Its when we try to get the bus up tp 400 That only 2 sticks max is allowable
    I think your wrong.
    You can use 1-3 slots of DDR in ALL boards, and still overclock well. The height of the overclock is dependent on your components, but for the most part, the slots you use aren't priority #1 in overclocking. When trying to acheive a 200 FSB (400MHz, DDR3200) overclock, your main concern is that your RAM is 3200 or higher compliant (not necessarily labeled 3200) Which slots you use is irrelevant.

    ALL DDR memory can be used on ALL DDR capable boards. However, to increase the FSB to anything above 100MHz (DDR1600) which is standard on most boards, one would need to purchase RAM that has been tested and complies with standards to run at that speed. Say for example, you buy DDR3500 and a new Athlon XP with a 166MHz FSB. You can run that DDR with that processor all day long at 166MHz (333MHz, or DDR2700) even thou the DDR is 3500, it will run at 2700 in that environment. When you begin to overclock you raise the operating rate of both CPU and RAM (and every other component in the system if you dont know what your doing) and the weakest chain will break first, most likely the CPU, which is what we want. We want to know the limits of the CPU, not the cpu and the RAM, or the cpu and my old modem. Same example two years later. (Hypothetical) You own the same RAM, but you just bought the newest board and CPU on the market which is capable of a 600MHz (1200MHz, DDR 4800) You CAN run that board and that RAM and that CPU together. Except this time you wont be able to run standard speeds. You would need to underclock the CPU to match speeds with the RAM (barring odd ratio settings) The DDR will work, but not as well as DDR purchased at the same time as the new CPU.

    So if homeboy buys the Asus and DDR3500, than it WILL work regardless of what Asus says. But you will be running the RAM at 2700 and not 3500. Thats where the headroom comes in. Start to overclock and you'll go above 2700 and begin to creap up on 3500. But the RAM dont care. It will go to 3500, so its less of a headache when you get into 200+FSB speeds, because thats when DDR3200 will start crapping out on you. 3500 will hang in there for longer.

  5. #15
    Join Date
    Jul 2003
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    33

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    :smokin: 1>[\]]\]\]\]\](+$+) : peace2:
    JediAgant
    I agree with you all the way
    I See that you come well trained by your
    master L-1/L-2( R2-D-2 )
    The argueible points on O\cing
    R on a system by system bases hay the mfgs say to use 2 sticks max not me lol
    :laugh:
    but yes he should use match memory same lot and all that
    :shoot3: Not some mixed matched ****:shoot3:
    That was the Question was it not and weather or not the bios changed from daul to single fuction when all three banks R filled
    Some of the cheper boards will clock down when all three banks r used that what they say Mfgs.
    (Thats what they always
    say just before they die):cheers:
    OLD! AmD 1.33 266 internal Bus
    384Mb Pc133 Micron cas3
    Asus Kt133Mb- S.B.PCI 512
    G-Force 2 Ti 128MbDDR
    4444$$$$$$$$$$$$$$$$$$
    System Upgrade on StandBy.
    $$$$$$$$$$$$$$$$$$$4Parts
    Well hell its 5 yrs Old Bult Bak When

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