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Thread: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS




  1. #31
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Sorry about the Delay Merman. Just updated a little bit.

    I am still working on some of the more advanced sections for P45, the info is out there but I like to use my own words as much as I can.

    Hope to soon somehow get a P45 and be able to personally address some of those additional Values

    Things Updated:
    BIOS image examples added

    Timing descriptions re-ordered so they better match most Gigabyte BIOS's and added a missing one. Also linked to Page that Explains them ALL

    MCH Voltage touched on a little bit

    Addressed MCH and tRFC Values for more then 2X1GB

    Performance Enhance Setting added, but not addressed yet

    Added another AnandTech Link for additional tRD reading. Thanks Aleslammer


    Thing to add:

    P45 Advanced BIOS settings

    Address Performance Enhance Settings.

    I know it has been a while since we discussed this, anything you can think of to add to my to do list?
    Last edited by Lsdmeasap; 08-26-2008 at 02:44 PM.

  2. #32

    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Hello Lsd,

    Great topic and thanks for sharing so useful tips. I am learning a lot here.

    With your instructions I was able to get similar results with inferior CPU and keeping it cool only working on memory parameters.
    It is not optimized yet but passes MemTest86+ and Prime95 as well.
    I think that memory is the best channel to be optimized and the one that will effectively speed-up any computer.
    So, my point is that the 2:1 ratio (16:8 in Lavalyst) is not difficult with those DDR3 memories.

    GA-Z97-D3H Windows Pro 8.1
    i5-4690K + Corsair H90
    Sapphire Radeon R7 240
    16GB (2x8GB) DDR3 Corsair Vengeance Pro 2400MHz PC3 19200
    Corsair CX750M
    Samsung SSD 840 EVO 500 GB

    Sharkoon VS-3V tower

  3. #33
    Lsdmeasap's Avatar
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    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Nice latencys for sure! Wow 1516 eh! Can the CAS come down any yet?

    Ya, sorry I wish I actually had some DDR3 Specific tips for you. But seems you get along fine!!

  4. #34

    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Is there suppose to be an image??? All I see is a small X.

  5. #35

    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Quote Originally Posted by Merman View Post
    Is there suppose to be an image??? All I see is a small X.
    Merman, try to refresh the page (press F5).

    Quote Originally Posted by Lsdmeasap View Post
    Nice latencys for sure! Wow 1516 eh! Can the CAS come down any yet?

    Ya, sorry I wish I actually had some DDR3 Specific tips for you. But seems you get along fine!!
    Yes, I can go down up to 9-9-9-26 but passes irregularly in Memtest86+. So, I prefer to lose some efficiency over stability. I think that I hit the wall but let see what you have for me first, thanks.
    GA-Z97-D3H Windows Pro 8.1
    i5-4690K + Corsair H90
    Sapphire Radeon R7 240
    16GB (2x8GB) DDR3 Corsair Vengeance Pro 2400MHz PC3 19200
    Corsair CX750M
    Samsung SSD 840 EVO 500 GB

    Sharkoon VS-3V tower

  6. #36
    Lsdmeasap's Avatar
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    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    What subtimings are you using? You may be able to improve those a little if you haven't tried already

    This is 2x1, spec'd at 1.8V right? Just checking

  7. #37

    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Yes, 2x1GB but @1.7v following Corsair specs.
    The timings are these below - I didn't change anything since I am noob in this matter.
    What move could you suggest?

    GA-Z97-D3H Windows Pro 8.1
    i5-4690K + Corsair H90
    Sapphire Radeon R7 240
    16GB (2x8GB) DDR3 Corsair Vengeance Pro 2400MHz PC3 19200
    Corsair CX750M
    Samsung SSD 840 EVO 500 GB

    Sharkoon VS-3V tower

  8. #38
    Lsdmeasap's Avatar
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    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    write to precharge looks a little high, what do you have set in BIOS 17?

    But like I said I dont really know much about DDR3, but I can say if you use looser subtimings you can get lower Main timings. But only bechmarks would tell you if those trade off's would be better or not.

    When you try 999-24 did you leave trd at 7? If so, try 8-9 and see if CAS 9 is any better then what you are running now

  9. #39

    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Quote Originally Posted by svcglobal View Post
    Merman, try to refresh the page (press F5).
    I see it now.

  10. #40

    Default Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

    Quote Originally Posted by svcglobal View Post
    Yes, 2x1GB but @1.7v following Corsair specs.
    The timings are these below - I didn't change anything since I am noob in this matter.
    What move could you suggest?

    So this is CM3X2G1333C9S2 as you said the voltage was 1.7 instead of 1.6???

    So it has an XMP setting in the SPD???

    If so you aren't using the XMP setting in the BIOS??? I just noticed you have a P-35 board that may not have the XMS Extreme Memory Profile option in Bios but you could still set it yourself.

    [FONT=FuturaBT-Bold][SIZE=7][COLOR=#231f20][SIZE=7]

    Edit I did say this in the posts about my experience but I will say it again.

    Since you have Everest use it to read the memory SPD in the Motherboard/SPD section. It lists the memory SPD in actual memory terms so you don't have to translate different terms. Try these settings especially if you have XMP. Corsair has already done most of the memory tweaking work for you.
    Last edited by Merman; 09-03-2008 at 03:05 AM.

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