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Thread: UD3LR 8gb memory crash




  1. #31
    Chike is offline Senior Member
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    Default Re: UD3LR 8gb memory crash

    Quote Originally Posted by milkman6453 View Post
    I seem to be have CAS stable at 7, 6 produces errors in WMD and makes things run a little slow(which seems odd to me). While i tweak these settings should i be increasing any voltage or anything, ill be working on static tRead later.
    No need to increase any voltage if they are stable. Lost track what your settings are now, can you post latest settings?

    It would be a good idea to run a memory benchmark, everest or other, with CAS 7 and auto to seer the 7 actually made things better and not worse. There is no point to risk stability if there isn't any real improvment.

  2. #32
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    Default Re: UD3LR 8gb memory crash



    WDM is quick to show errors and it is always correct atleast for me.
    I also use prime95 and memtest.
    So far im pretty stable. Changing static tReads within the hour
    what is a memory benchmark i cant find one
    Last edited by milkman6453; 07-27-2009 at 01:17 AM.
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  3. #33
    Chike is offline Senior Member
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    Default Re: UD3LR 8gb memory crash

    So this is the best stable you got so far? What the MCH Core and DRAM Votage?
    Could you do a memory benchmark (everest or other,) so we can see how it is from performance point of view?
    And what is WDM if you don't mind?

  4. #34
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    Default Re: UD3LR 8gb memory crash

    As wierd as it may sound (it's actually logical) your tight settings for sub timings could be effecting the RAM's ability to run CAS 6. This is why I don't advocate using an XMP. It's fine for default XMP timings, but when tweaking, manual gives you control.

    As an experement, I would manually set all your 5 subtimings (not the more complex ones, unless you want to) looser. Be sure to test after, to make sure you have an improvement over CAS 7 with XMP. Set 5-5-8-68-5 at 2T and give CAS 6 another go. I only say this, because in my experience (and it's ONLY ime) if a set of modules is run at too low a CAS it simply won't boot. I'm not saying you can make it stable, and also not saying tht increasing those sub timings might reduce the performance gain over CAS 7 with tighter ones, but the fact that CAS 6 boots at all gives hope. Increasing tRAS a little may also help stabilize CAS 6. 6-6-6-21 will definitely out perform 7-7-7-17. Noticeable to you? Maybe, it depends. Improvement in synthetic tests and SuperPi? Almost certainly.

    Edit:** WDM = Windows Driver Model. I believe Milkman may be experiencing crashes/errors relating to it. Unstable |RAM can lead to a host of seemingly random errors. Probably memory space allocated to WDM or a driver is becoming corrupt at CAS 6.
    Last edited by Psycho101; 07-27-2009 at 01:18 AM.
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  5. #35
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    Default Re: UD3LR 8gb memory crash

    no no no SORRY WDM is windows memory diagnostic its like memtest in 8 minutes :) ill run a bench now

    how do i run the benchmark i click it and it goes to some database, im using everest

    with current settings stated in above post with vDRAM at 1.6 and Mch Core at 1.2 here is my bench mark
    static tRread still at 7 and 7

    Latency is 68.2 ns
    Memory read is 7558 MB/s
    Write is 7084MB/s
    Copy is 7387 MB/s
    Last edited by milkman6453; 07-27-2009 at 01:29 AM.
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  6. #36
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    Default Re: UD3LR 8gb memory crash

    Windows Memory Diagnostic is WMD.

    You may find it more satisfying to use SuperPI to bench with in combination with a synthetic program. It's not exactly the kind of thing you'd use on your machine every day, but it's a little more real world with regards to indicating performance. There's no substitute for testing with what you do most though.

    If you game, do some gaming benchmarks. Avoid 3DMark, as those scenes are scripted. there's no AI calculations going on in the GPU tests. Use a game that is predominantly CPU limited to test how it effects frame rates. To see if the CPU speed is a definite bottleneck for the GPU, use a more GPU limited game such as Far Cry 2. Crysis isn't my favorite for benching, it runs like a dog on most non nuclear powered rigs. I bought |Crysis when it first came out, and haven't been able to play it. Can't stand 24 FPS in Max. The problem is, because it's designed to be "photo realistic" anything other than max settings looks crap (to me).
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  7. #37
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    Default Re: UD3LR 8gb memory crash

    What should i calculate pi to, for a proper benchmark? i did 1 million digit is avg of 20 seconds
    2 million in avg of 44 seconds
    when doing 4 million temps went up to 55-65c in 1 minute 49 seconds
    i dont know i dont feel safe doing 8m i like low temps
    Last edited by milkman6453; 07-27-2009 at 01:55 AM.
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  8. #38
    Chike is offline Senior Member
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    Default Re: UD3LR 8gb memory crash

    Quote Originally Posted by milkman6453 View Post
    Memory read is 7558 MB/s
    Write is 7084MB/s
    Copy is 7387 MB/s
    If taken with everest they don't look bad at all, better than mine at 333FSB.
    I had 7167 read 7026 wite 7186 copy (higher than read?) and 70.4ns latency with tDDR-800 4-4-4-12 tRD 6.
    I don't know how DDR3 should compare to DDR2.

  9. #39
    Chike is offline Senior Member
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    Default Re: UD3LR 8gb memory crash

    Quote Originally Posted by milkman6453 View Post
    What should i calculate pi to, for a proper benchmark?
    1M is used for comparison.

    Quote Originally Posted by milkman6453
    i did 1 million digit is avg of 20 seconds
    2 million in avg of 44 seconds
    when doing 4 million temps went up to 55-65c in 1 minute 49 seconds
    i dont know i dont feel safe doing 8m i like low temps
    Hmmm scores not so good, and temps are high.
    You should be around 17seconds for 1M I think at 3GHz. No other application is running during the benchmark? Watch with CPU-Z that CPU speed is 3000MHz when the test is running.

  10. #40
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    Default Re: UD3LR 8gb memory crash

    The 1m test is what I use, purely because it's quick. I know then that if it's +-13 sec that I've gained or lost a little. Always run it a few times. 5 runs sits well with me.

    Something like the 32M test may vary less in proportion to how many digits are being calculated though.
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