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Thread: ED45-UD3p with 8400 Dual Core overclock help! :)




  1. #111
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quote Originally Posted by profJim View Post
    OK, you called my bluff.
    The real test is if you really understand the concepts and relationships in the article, your system will be fully stable above 4.20GHz by Friday evening.
    Haha, fair enough.



    Quote Originally Posted by profJim View Post
    In case you find your homework assignment too easy, check out GA-EP45-UD3P - Won't boot with 450FSB, where D-an-W overclocked his E8400/EP45-UD3P system, starting in May 2009 and ending in December 2009.
    Some thread statistics:[LIST][*]889 replies[*]viewed 38,951 times[*]it is the fifth most viewed non-sticky thread in the Gigabyte forum
    WHOAH, that sounds like some epic, classic tragedy. I will definitely check that out.


    Quote Originally Posted by Deafty View Post
    What you think Prof Jim? Are the gloves off now or can we all work together
    I'm all for working together first, but I'm also enjoying the friendly competition haha.


    Quote Originally Posted by profJim View Post
    No problem, we can still spy on them and they can spy on us ;)
    In case you missed my post in Jake's thread, first one to 4.50GHz stable is the winner.
    Quote Originally Posted by Deafty View Post
    Jake,. what you doing still reading this! you need to sleep and shutdown your PC so I can catch up!
    LOL!!!


    Quote Originally Posted by Chike View Post
    Encouraged by the OP memory performance I went and tried 463MHz FSB with SMM 2.40B tRD 8.... and it boots!
    Not only it boots it pass memtest86+ and starts windows.... so far so good. More testing now.
    Congrats!!!


    Okay, update time. I have some bad news.... all blend tests so far have passed after 8 hours. It will run for another 8 hours while I'm away, but looks like we might be doing some SWAG tonight.

    <img src = http://img89.imageshack.us/img89/2315/8hoursprime95blend1.png>

  2. #112
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Sorry to hear about your stable overnight test.
    Have fun SWAGing tonite, I'll be watching ;)

  3. #113
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quote Originally Posted by jake8078 View Post
    Okay, update time. I have some bad news.... all blend tests so far have passed after 8 hours. It will run for another 8 hours while I'm away, but looks like we might be doing some SWAG tonight.
    That's a shame.

    Try to find the point of no boot, and see if x8 CPU ratio does boot at that point.
    Then with x8.5 CPU ratio(or x8 if x8 fails too) try to work the clock skews, only one of them should need to be changed.
    Begin with CPU clock skew, then rest to zero and try the MCH clock skew if the CPU didn't make things better.
    Try in the range 50-250ps, if one of them does enable boot, keep increasing it untill yoou cannot boot again, and then select the value in the middle.

  4. #114
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Chike, I don't know if Jake knows to only use skew settings = 0, 50, 100,....250, etc.
    If I'm wrong then never mind.
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  5. #115
    Chike is offline Senior Member
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    50 to 250 is the range to test or quit after if no success, but if lets say 150 boots keep it up until if doesn't boot again, and we will choose the value in the middle.
    It may be stable with the first value but will need change with higher FSB. That's how it was when I found my CPU clock skew.

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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quote Originally Posted by Chike View Post
    That's a shame.
    Try to find the point of no boot, and see if x8 CPU ratio does boot at that point.
    Then with x8.5 CPU ratio(or x8 if x8 fails too) try to work the clock skews, only one of them should need to be changed.
    Begin with CPU clock skew, then rest to zero and try the MCH clock skew if the CPU didn't make things better.
    Try in the range 50-250ps, if one of them does enable boot, keep increasing it untill yoou cannot boot again, and then select the value in the middle.
    Quote Originally Posted by profJim View Post
    Chike, I don't know if Jake knows to only use skew settings = 0, 50, 100,....250, etc.
    If I'm wrong then never mind.
    Understood guys, I will try this, and will use only increments of 50, up to 250, for this. Thanks.

    I studied the Anandtech article today (took awhile, but I took my time digesting it - lots of material). Excellent read, thank you. Gave me some food for thought...

    So far, my profiles have been like this:
    412 x 8.5 x 1099 (2.66): Passed IBT
    418 x 8.5 x 1115 (2.66): Failed IBT
    418 x 8.5 x 1003 (2.40): Passed IBT
    418 x 8.5 x 1017 (2.40): Passed IBT
    430 x 8.5 x 1032 (2.40): Passed IBT
    436 x 8.5 x 1046 (2.40): Passed IBT
    448 x 8.5 x 1075 (2.40): Passed IBT*
    460 x 8.5 x 1105 (2.40): Wouldn't boot - turned off after 5 seconds. No beeps at all.

    *Setup that I'm currently still testing until I get home, but so far, it's stable.

    The highest memory frequency I've demonstrated is 1099 (it booted windows with 1115, but IBT failed), and I am approaching that limit going past my current stable setup. Perhaps I should just quickly try loading with 2.00B. I think I tried this, as suggested, but I'm not entirely sure if I up'd the tRD to go along with it.

    I guess that setting the CPU ratio will also eliminate the possibility of it being related to the memory subsystem, because I will be increasing the FSB but the CPU will be at a lower setting. Specifically, if it still won't boot when set to 8x, we know the problem lies with the memory settings?

  7. #117
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quote Originally Posted by jake8078 View Post
    The highest memory frequency I've demonstrated is 1099 (it booted windows with 1115, but IBT failed)
    If I am not mistaken(and I never am), you were stable with DDR-1112.
    Anyway, my DDR-1115(@2.02v) passed 3 loops IBT and 3 hours 20 minutes prime large FFT.


    Quote Originally Posted by jake8078
    Perhaps I should just quickly try loading with 2.00B. I think I tried this, as suggested, but I'm not entirely sure if I up'd the tRD to go along with it.
    Try both 2.00B and 2.00D with tRD 9 and tRD 10.


    Quote Originally Posted by jake8078
    I guess that setting the CPU ratio will also eliminate the possibility of it being related to the memory subsystem, because I will be increasing the FSB but the CPU will be at a lower setting. Specifically, if it still won't boot when set to 8x, we know the problem lies with the memory settings?
    This partially true. There is still a possibility that CPU frequency will effect the buss settings.
    Since Intel use AGTL+, the Asist is in effect for one cycle, the higher the CPU frequency the shorter this cycle, and finer tuning will be needed.

  8. #118
    Chike is offline Senior Member
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    This passed IBT lets hope you can do about the same (or more)

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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quote Originally Posted by Chike View Post
    This passed IBT lets hope you can do about the same (or more)

    WOW!! That's incredible!!!!






    Well, I tried many tests, and had success with none. As you know, my current limit that I've been testing is 448 x 8.5 x 1075. I should note that, in fact, the real limit is one FSB higher at 449 x 8.5 x 1078. When I try to move the FSB to 450 it will not boot (as previously mentioned).


    First, I revisited the memory settings briefly:
    449 x 8.5 x 898 (tRD 9): No boot
    449 x 8.5 x 898 (tRD 10): Boot


    Up'ing the FSB once to...
    450 x 8.5 x 900 (tRD 10): No Boot


    Same results with 2.00D.


    I then reset to my stable build, and switched it to 450 x 8 x 1080:
    No boot


    I then tried skewing in 50 ps increments from 50 - 250, first with the CPU and then with the MCH clock:
    No boot




    BIOS settings for my stable 448 x 8.5 x 1075 build that I've been basing my testing off of are below:




    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster -------------- : [Auto]
    CPU Clock Ratio ---------------------- : [8X]
    Fine CPU Clock Ratio ----------------- : [0.5]
    CPU Frequency ---------------------: 3.80 Ghz (448x8.5)


    CPU Host Clock Control --------------- : [Enabled]
    CPU Host Frequency (Mhz) --------------: [448]
    PCI Express Frequency (Mhz) ---------- : [100]
    C.I.A.2 ------------------------------ : [Disabled]


    Advanced Clock Control ------- [Press Enter]
    CPU Clock Drive ---------------------- : [800mV]
    PCI Express Clock Drive -------------- : [900mV]
    CPU Clock Skew (ps) ------------------ : [0]
    MCH Clock Skew (ps) ------------------ : [0]


    DRAM Performance Control
    Performance Enhance ------------------- : [Standard]
    Extreme Memory Profile --- (X.M.P.) --- : [Disabled]
    (G)MCH Frequency Latch ---------------- : [Auto]
    System Memory Multiplier -------------- : [2.40B]
    Memory Frequency (Mhz) ---------------- : [1075]
    DRAM Timing Selectable ---------------- : [Manual]


    Standard Timing Control
    CAS Latency Time -------- 5 ---------- : [5]
    tRCD ------------------- 7 ---------- : [5]
    tRP --------------------- 7 ---------- : [5]
    tRAS ------------------- 20 ---------- : [15]


    Advanced Timing Control
    tRRD ------------------- 4 ---------- : [Auto]
    tWTR ------------------- 4 ---------- : [Auto]
    tWR --------------------- 8 ---------- : [Auto]
    tRFC ------------------- 68 ---------- : [Auto]
    tRTP ------------------- 4 ---------- : [Auto]
    Command Rate (CMD) --------0------------ : [Auto]


    Driving Strength Profiles
    Driving Strength --------- : Press Enter


    Channel A
    Static tRead Value --------------------- : [8]
    tRD Phase0 Adjustment ------------------ : [Auto]
    tRD Phase1 Adjustment ------------------ : [Auto]
    tRD Phase2 Adjustment ------------------ : [Auto]
    tRD Phase3 Adjustment ------------------ : [Auto]
    Trd2rd(Different Rank) ----------------- : [Auto]
    Twr2wr(Different Rank) ----------------- : [Auto]
    Twr2rd(Different Rank) ----------------- : [Auto]
    Trd2wr(Same/Diff Rank) ----------------- : [Auto]
    Dimm1 Clock Skew Control --------------- : [Auto]
    Dimm2 Clock Skew Control --------------- : [Auto]


    Channel B
    Static tRead Value --------------------- : [8]
    tRD Phase0 Adjustment ------------------ : [Auto]
    tRD Phase1 Adjustment ------------------ : [Auto]
    tRD Phase2 Adjustment ------------------ : [Auto]
    tRD Phase3 Adjustment ------------------ : [Auto]
    Trd2rd(Different Rank) ----------------- : [Auto]
    Twr2wr(Different Rank) ----------------- : [Auto]
    Twr2rd(Different Rank) ----------------- : [Auto]
    Trd2wr(Same/Diff Rank) ----------------- : [Auto]
    Dimm1 Clock Skew Control --------------- : [Auto]
    Dimm2 Clock Skew Control --------------- : [Auto]


    Motherboard Voltage Control
    CPU
    Voltage Types------------ Normal -------- Current -----
    Load-Line Calibration ----------------- : [Enabled]
    CPU Vcore --------------- 1.27500V ---- : 1.27500V
    CPU Termination --------- 1.200V ----- : 1.200V
    CPU PLL ----------------- 1.500V ----- : 1.500V
    CPU Reference ----------- 0.760V ----- : [Auto]


    MCH/ICH
    MCH Core ---------------- 1.100V ------- : 1.200V
    MCH Reference ----------- 0.760V ------- : [Auto]
    MCH/DRAM Ref ------------ 0.900V ------- : [Auto]
    ICH I/O ----------------- 1.500V ------- : 1.500V
    ICH Core ---------------- 1.100V ------- : 1.100V
    DRAM
    DRAM Voltage ------------ 1.800V ------- : 2.000V
    DRAM Termination -------- 0.900V ------- : [Auto]
    Channel A Reference ----- 0.900V ------- : [Auto]
    Channel B Reference ----- 0.900V ------- : [Auto]


    Advanced Settings
    Limit CPUID Max. to 3 ------------------ : [Disabled]
    No-Execute Memory Protect -------------- : [Enabled]
    CPU Enhanced Halt (C1E) ---------------- : [Disabled]
    C2/C2E State Support ------------------- : [Disabled]
    x C4/C4E State Support ----------------- : [Disabled]
    CPU Thermal Monitor 2 (TM2) ------------ : [Enabled]
    CPU EIST Function --------------------- : [Disabled]
    Virtualization Technology -------------- : [Disabled]


    Integrated Peripherals
    USB Storage Function ------------- : [Disabled]

  10. #120
    Chike is offline Senior Member
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    OK the skews don't work, lets try the references.
    Either one of or both will need tweaking.
    The references are a percent of VTT, and scale with it, currently on auto default 63.33% of VTT (0.76v).
    Since we don't wan't to bother with the math, all changes made to references will be done when VTT is at 1.2v.
    The procedure as follows:
    Set VTT to 1.2v
    Adjust the refernce as desired
    Set VTT back to it's original value(the reference will scale to the new VTT)

    Wehn posting settings include the value at 1.2v, exxample:
    CPU Termination --------- 1.200V ----- : 1.240V
    MCH Reference ----------- 0.760V ------- : [0.785] (0.76 @ 1.2v VTT)

    Since your VTT is currently at 1.2v you only need to change the reference.
    Begin with MCH Reference, try 0.74, 0.72, 0.70, 0.68 at 1.2v VTT see if any of them make a change. If not try up to 3 clicks above 0.76(I don't know your board options).
    If MCH Core make no change leave it at default and try the CPU Reference.
    If you want to use 2.00B or 2.00D SMMs make sure they are OK at 448MHz FSB before you try 449 or 450.

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