Dual channel memory issue

Discussion in 'Hardware' started by greenbrucelee, Jun 7, 2008.

  1. Mathematix

    Mathematix Megabyte Poster

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    No, Freddie. My logic is sound, but the tool is at fault. :biggrin

    Let me give to an example: You have a nail that you wish to hammer into a board. You know that in order to get the nail into the board you must use a tool that is suitable for the task - namely a hammer. That was where the logic came in. Now you have your nail, board and hammer ready knowing that you have everything you need to get the nail into the board. as you are about to take your first whack at the nail lined up on the board the hammer breaks, so you have not got your nail in the board.

    Did that mean that your logic of using the hammer to get the nail into the board was wrong? No, it mean that you will need to find another hammer or use other means that apply your original logic to get the hammer into the board.

    Can you see how this scenario relates to the problem with memtest86+ not being reliable?

    As a side note I've always found memtest86+ to be very reliable. Any more examples beyond one thread that it is in fact unreliable? What other tool would you use that you consider reliable? :blink
     
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  2. Mathematix

    Mathematix Megabyte Poster

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    Thanks! :biggrin
     
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  3. greenbrucelee
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    greenbrucelee Zettabyte Poster

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    I have ran memtest86 and it found no errors.

    According to my mobo manual, the RAM I have is supported in A, B or C. But as has been said maybe dual channel is only supported in slots 2 & 4.

    The slots must be working because the ram was reconised when it was installed in slot 3.

    This pretty weird :blink

    just to add it said ddr dual channel on boot up when the the ram was in 1 & 3 and it does now when its in 2 & 4.
     
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  4. ffreeloader

    ffreeloader Terabyte Poster

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    I would think that as a programmer you would understand logic and the usage of proofs a little better. All I have to do to disprove an absolute is show one instance where the absolute is not true. I've done that, and there are other instances also.

    Yes, the use of memtest gives further evidence that the hypothesis is true, but it is not absolute proof. If it were it could never fail of giving true results, but as I have just shown it doesn't do that. It fails spectacularly sometimes.
     
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  5. Mathematix

    Mathematix Megabyte Poster

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    Geez, ffreeloader.

    Umm... :blink

    You are fuzzifying the boundaries. You would have to prove specifically, using my hammer example, that there exists a case whereby there is a hammer that exists that if it is not broken and suited for the job, that it does not hammer the nail into the board as described.

    Okay, ffreeloader. Do you understand mathematical logic? If you can I will explain it to you that way. It's clear you're not getting it otherwise.
     
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  6. greenbrucelee
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    I am going to swap the dimms back to 1 & 3 and run memtest and see if I get anything, I just understand why it would reconise it as dual channel or the dimm in that slot if it was knackered.
     
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  7. Mathematix

    Mathematix Megabyte Poster

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    Checked the mobo manual to ensure that you must place the modules in slots 2 and 4 first? Maybe that's the reason why they won't work in 1 and 3. Don't quote me on that, though. :)
     
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  8. greenbrucelee
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    Its says the type of RAM ihave will work in any slot (A,B,C) and for dual channel configuration the total size of memory modules must be the same. DIMM_A1+DIMM_A2 = DIMM_B1 + DIMM_B2.
     
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  9. Mathematix

    Mathematix Megabyte Poster

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    Doesn't really mean very much. Have you got a link to the manufacturer's website to the board model?
     
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  10. greenbrucelee
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  11. greenbrucelee
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    this is the ram on the qvl that I have BL12864AA804.16FD (crucial ballistix)
     
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  12. NightWalker

    NightWalker Gigabyte Poster

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  13. greenbrucelee
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    you mean the super i/o chip?
     
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  14. Mathematix

    Mathematix Megabyte Poster

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  15. greenbrucelee
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    I think I'll email their tech support.
     
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  16. NightWalker

    NightWalker Gigabyte Poster

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    This socket here:

    [​IMG]

    Something to do with SLI? It says duel video cards on it.
     
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  17. greenbrucelee
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    Thats the sli connector, you pull it back when you have dual graphics cards in and connect it with the sli connector.
     
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  18. NightWalker

    NightWalker Gigabyte Poster

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    I see, never setup an SLI before.
     
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  19. greenbrucelee
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    Asus call it a connector card, you pull it back then out and enables the mobo to run two GPUs at x8.
     
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  20. NightWalker

    NightWalker Gigabyte Poster

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    From what I have read running an SLI can be tricky. My mobo supports ATI Crossfire, no extra connectors for that. I guess that’s why you have to have an Nvidia chipset to run GPUs in SLI.
     
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